Steel heating radiators: types, characteristics and advantages of batteries

Among the various types of radiators, steel options have recently begun to be used most often, which have some significant advantages over their cast iron predecessors. And this is primarily due to their lighter weight and significant ease of installation. Let's look at the main types of steel heating radiators.

Features and device

Panel radiators are modern heating devices consisting of steel panels and designed for various heating systems in private houses and apartments. To improve convection heat transfer and increase the heat transfer area, special U-shaped steel ribs are placed inside the panels.

Thanks to this, the heat transfer rate increases to 50%. The main feature of such products is the absence of sections, instead of which the front side is designed in the form of a solid panel created from two sheets of steel 1.25 mm thick.

Sometimes there are also models made of galvanized steel, in which the finning of the plates is made of metal with a thickness of 0.04 to 0.5 mm. The outside of panel-type devices is primed and painted using the powder method. As a standard, radiators are painted white, but you can also find colored panels made to order by manufacturers.

Typically, the products consist of two or three panels, decorated with lattice on the sides and top. As a result, the radiator acquires an aesthetic appearance and fits original into any modern design.

Due to the fact that the volume of the panels is small, instant heating is observed in the OS, since heat exchange occurs very quickly.

Therefore, within 15 minutes after turning on the device, the room will be warm, because heating is carried out not only by transferring warm air, but also by releasing heat from the body itself.

Panel radiators are excellent for use in country houses , this is due to the fact that they are designed for operation at low system pressure. As for apartments in multi-storey buildings, these devices are usually installed in them in the presence of autonomous systems, since the pressure in centralized systems often exceeds 10 atmospheres. Also, the panel option is not recommended for centralized heating, because the coolant may become contaminated and fail.

Advantages and disadvantages

Today, panel batteries can be found on the market in various countries, as they are the most traditional device that provides high-quality heating and meets energy saving requirements.

The main advantages of such radiators include:

• Stylish design. The product has a simple and neat appearance. Manufacturers produce devices in various designs, from classic to modern.
• Convenient adjustment. The degree of heating can be easily controlled using mechanical and electronic devices.
• High heat dissipation. Thanks to the special convection principle, the device has increased efficiency.

• Affordable price. Compared to other types of heating devices, panel radiators are cheaper because steel is used for their manufacture.
• Saving energy resources. The device has a small capacity, so much less electricity is consumed to heat it.
• Multifunctionality. The product can be used both as a radiator and a convector.
• Light weight. The design is lightweight, so it is quite possible to install it yourself.
• Large selection of models. Radiators of any power and size are available on the market.

Panel batteries have the following disadvantages:

• Instability to water hammer. Because of this, radiators cannot be connected to central heating systems.
• High sensitivity to acidic environment. To protect the steel surface of a product from corrosion, it is necessary to constantly maintain its pH level in the range from 8.3 to 9.5.
• According to the operating instructions, it is prohibited to drain water from the system for a long time. If this is not done, the inner walls of the panels will come into contact with oxygen, which will lead to their corrosion.

Types of steel radiators, based on their design features

Steel radiators can be of two types:

• Tubular radiators;
• Panel radiators.

Panel steel heating devices are a kind of panel that is installed on the floor or attached to the wall. Such metal heating radiators have a more aesthetic appearance and have higher heat transfer rates.

Panel radiators are manufactured according to the following scheme: the panel of such devices is welded from two plates, and coolant circulates between these plates. Typically the plates have a thickness of 1.2 to 1.5 mm. Spot welding is used to connect these plates.

Which steel heating radiators are better: installation and assembly

Steel panel radiators

Among the advantages of panel steel radiators is the ability to choose a device with the most suitable dimensions for you.

Panel radiators, in turn, may differ in the method of connection to the heating system. There are three ways to connect steel panel heating devices:

• Lateral connection;
• Bottom connection;
• Universal connection.

Options for connecting heating devices
In the case of a bottom connection, the heating device must be equipped with a built-in thermostatic valve. It will be possible to mount a thermostat on this valve. Thanks to a device such as a thermostat, you can maintain the temperature that is most comfortable for you.

Metal heating radiators with a side connection type are considered cheaper. In this case, you can also use the natural circulation of coolant in the heating system. In addition, this connection is not as noticeable as the bottom one.

Radiators made from several panels have higher heat transfer. This design allows heat to be transferred only to external-type planes, so U-shaped plates can be welded to their internal surfaces of the device. Thanks to this, you can increase the surface that will give off heat.

Three-panel steel radiators

However, three-panel radiators also have some disadvantages. First of all, this concerns their weight. In terms of weight category, such devices can catch up with cast iron batteries, which are quite heavy. In addition, such a device will require a larger volume of water, so the effectiveness of thermal control will be significantly reduced. In terms of thickness, such radiators surpass even cast iron appliances, since they can be up to 160 mm thick. Another disadvantage is the fact that the inner area of ​​the panel radiator is a little more difficult to clean from dirt.

Panel heating radiators

Tubular steel heating radiators are somewhat reminiscent of cast iron radiators in appearance.

Tubular radiators are most suitable for administrative buildings or houses with one or more floors. Tubular radiators can withstand operating pressure of no more than 8-10 atmospheres. The thickness of their walls varies from 1.3 to 1.5 mm. Such devices can reach a height of 300 cm. Tubular steel radiators, in turn, can be of types such as sectional or non-sectional.

Strengths and weaknesses of batteries

Tubular models of heating devices are appropriate for use in private homes, where the heating system is characterized by a stable and low operating pressure in the absence of sudden surges and water hammer.

The popularity of tubular devices is due to a set of their positive qualities:

• high working pressure and ability to withstand water hammer;
• resistance to mechanical damage due to the absence of gaskets in welded sections;
• uniform heating of the surface and high heat transfer;
• smooth surface prevents dust accumulation;
• ease of installation , possibility of bottom and side connections, various placement options;
• possibility of temperature adjustment when equipped with a thermostatic valve.

In addition to fasteners, tubular radiators can be equipped with special brackets used as heated towel rails.

There is also a whole category of models classified as design radiators - they are used to create an interior. These devices can be produced in the form of frames for mirrors or railings for stairs. Floor-to-ceiling height models are successfully used for zoning a room.

By giving intricate shapes to heating devices, manufacturers increase the competitive attractiveness of their products. But in steel batteries shaped like railings, the functional load increases

A lot of positive qualities and excellent characteristics inherent in steel heating radiators make their use attractive. Such devices are easy to fit into the interior; they allow you to visually expand the space.

However, we should not forget about the disadvantages of tubular models, which are as follows:

• low resistance to corrosion processes, especially evident when the quality of the coolant is low; Spot welding areas are most susceptible to corrosion.
• high cost.

As for cost, tubular batteries are by no means a budget solution. Their installation is most often resorted to by designers who are not constrained by funds when implementing their projects.

Pros and cons of panel radiators

Panel-type batteries, like any equipment, have their strengths and weaknesses. Their main advantage over their counterparts made from other materials is cost and appearance. These advantages are especially noticeable when compared with copper or cast iron models.

We recommend: What are the advantages of heating wood stoves?

The advantages of panel structures are as follows:

1. Reliability and simplicity of the device . The absence of complex elements minimizes the likelihood of breakdown.
2. Easy to install . It is possible to carry out installation work on your own. Both bottom connection to the circuit and side connection are also available.
3. Good heat transfer , which is achieved not only by the large battery area, but also by convection.
4. Economical . Panel models of devices require a minimum amount of coolant, which requires less energy to heat up. Savings, in comparison with equipment made of cast iron, can reach 30-40%.
5. Presentable appearance - this allows you not to spend additional money on the purchase and installation of decorative and protective screens.
6. Wide assortment - a rich model range with various dimensions in length, depth, height of devices.

It is obvious that panel instruments have quite a lot of advantages, which explains their popularity and demand. But they also have significant disadvantages. If this is neglected, the stable and reliable operation of the entire heating system can be jeopardized.

The weaknesses of panel-type equipment are as follows:

1. Sensitivity of welds to water hammer . With centralized heating, safe operation is only possible if a gearbox is installed, the purpose of which is to mitigate water hammer.
2. Tendency to corrosion , which manifests itself especially acutely when the quality of the circulating fluid is low. The cyclical six-month absence of water inherent in central heating systems significantly accelerates corrosion, reducing the service life of the radiator.
3. The likelihood of defects - during transportation and operation, the instrument panels are easily scratched, which can also accelerate corrosion.

When choosing panel-type steel radiators, you need to take into account all the details of their operation, especially when connecting to central heating systems.

Performance characteristics of steel heating radiators

The founder of the tubular radiator is Robert Zehnder, and it is not surprising that the first company to produce such radiators was called Zehnder. Initially, a tubular radiator was not used for the heating system at all, but for cooling the motorcycle engine. After some time, such radiators found application in the industrial sector.

Among the operating parameters and characteristics of steel radiators, the following can be distinguished:

• Since high-quality metal is used for the manufacture of such heating devices, they are able to withstand fairly high operating pressure. These stainless steel heating radiators are best suited for individual buildings. In an individual heating system, pressure is not as high as in multi-storey buildings, so steel radiators can last for quite a long time. In addition, such radiators will be able to work without any interruptions.
• For the manufacture of such radiators, simple technologies are used, so their retail price is relatively low. Based on this indicator, you can choose the radiator most suitable for a particular room.

Manufacturing of steel heating radiators

• Steel radiators have fairly good resistance to hydraulic shocks. Sections of such radiators are welded without the use of various gaskets, which is why they are so highly resistant to mechanical damage.
• Appearance is the most important advantage of such radiators. Iron radiators can be painted in any color that you like best. They can be placed horizontally, at an angle or vertically. You can also add more sections to such radiators. Using steel heating radiators you can heat a room of any size.
• Steel radiators are quite versatile devices. They can be used with almost any fastening materials. Steel radiators are usually sold complete with fasteners. Thanks to this, their installation can be carried out quite accurately and quickly.

Comparative characteristics of steel radiators compared to other radiators

Steel radiators have good heat transfer, are resistant to corrosion and heat up quickly. They combine two types of heat transfer - radiation and convection. They have a modern attractive appearance and an inexpensive price.

Among the shortcomings, the most significant is that they do not withstand water hammer, therefore priority use in autonomous heating systems.

Cast iron radiators are corrosion resistant, excellent heat dissipation, and retain heat well. Withstands pressure changes and low-quality coolants.

But their outdated design, bulkiness and high inertia do not allow their use in modern heating systems.

Specifications

The product passport indicates all the technical characteristics necessary to calculate the optimal configuration of the heating system required to heat the room.

Different types of radiators

The main parameters that you should pay attention to are:

Heat dissipation

High thermal power is the main parameter; it depends on the following nuances: the area of ​​the heated room and the number of installed panel radiators, which must be correctly calculated. When calculating, it is important to accurately take into account the technical characteristics of the room and the parameters of the heating radiator. After a complete analysis and correct calculation, you can select the desired model of heating appliances necessary for proper and high-quality heating of the room.

Power table for steel panel radiators

For more information about the heat transfer of heating radiators, comparison of the performance of steel, cast iron, aluminum and bimetallic models from various manufacturers, as well as the influence of the placement and connection method on the heat transfer, see the corresponding article - https://gradusplus.com/radiatory-otopleniya/teplootdacha-radiatorov-otopleniya -sravnenie-pokazatelej-i-sposoby-rascheta/.

Operating pressure

The maximum permissible operating pressure should not exceed 10 bar. It is necessary to monitor this parameter and avoid sudden pressure surges exceeding the permissible values, which can lead to breakdown and failure of the heating device.

Heating temperature chart

Coolant temperature

For proper operation of a steel radiator, the maximum coolant temperature should not exceed 110 °C.

Product dimensions

On sale, rectangular steel batteries come in various sizes (one-, two- and three-panel).

Types of steel heating radiators

Due to the large selection of models, the dimensions of radiators can vary: - width from 40 to 300 cm; - height from 30 to 90 cm.

Very important! The main feature of steel panel batteries from sectional radiators is that they have a one-piece design, so it is very important to take into account all parameters when calculating, since it is not possible to increase or decrease the design of a panel radiator, and you will need to choose new panel batteries. All this leads to additional money expenses.

Dimensions of steel panel radiators of various types

Installation

Installation of steel panel batteries is quite simple and does not take much time. Heating radiators are secured to the wall or floor using fasteners.

Fastening steel panel radiators to the wall

Fastening steel panel radiators to the floor

Operating time

Compliance with the conditions for using filters and monitoring operating pressure standards in the system allows you to extend the operation of heating devices up to 20 years.

Design of panel radiators.

Information about equipment Steel panel radiators Lidea LK Type 33

Steel panel radiators Lideya LK Type 33 are radiators 153 mm deep, with side connections (four side pipes in each corner of the radiator with internal thread G½), with 3 panels, 3 convectors, grille and sidewalls, available in heights of 300, 500, 600, 700 mm and lengths from 400 to 3000 mm.

Application of radiators Lidea LK Type 33

Radiators Lideya LK Type 33 are intended for heating residential, public, administrative and industrial buildings with closed heating systems connected to the heat supply system according to an independent circuit and without free communication of the coolant with the atmosphere in expansion devices, with a coolant temperature of no more than 120 ° C and a maximum working excess pressure up to 0.86 MPa inclusive.

Technical features:

• Radiator panel sheet thickness: 1.2 mm
• Pitch of vertical water pipes: 33 1/3 mm
• Working pressure: 8.6 bar
• Test pressure: 13 bar
• Maximum temperature: 120°C
• Colour: RAL 9016 snow white
• Surface treatment: Multi-stage treatment: cleaning, phosphating, dipping primer, epoxy powder coating, firing 2100C. Complies with DIN 55900
• Thermal power is indicated for temperature conditions 75/65/20° C

Marking

The symbols for Lidea LK Type 33 radiators include two numbers, the first of which indicates the type of radiator, and the second the height and width of the radiator.

For example, a Lidea LK Type 33 radiator with a height of 300 and a width of 2200 mm will be designated: LK330322, where 03 is a height of 300 mm, and 22 is a width of 2200 mm.

terms of Use

• Installation of Lideya LK Type 33 radiators is carried out in accordance with the provisions of current building codes, and is carried out by a specialized installation team
• Radiators Lidea LK Type 33 are mounted using brackets
• For optimal air convection, it is recommended to calculate the following clearances during installation: a distance of 100 - 150 mm from the floor to the bottom edge of the Lidea LK Type 33 radiators, and 100 mm from the top edge of the radiator to the window sill
• For efficient operation of Lidea LK Type 33 radiators, it is advisable to bleed air from the upper manifold of the device once every two to three months using an air vent (air valve). To do this, use a key to turn the valve rod 90°C for 10-15 seconds until the air stops escaping, then return the valve rod to its original place
• The air valve is installed exclusively on the upper connection hole!
• It is strictly forbidden to drain the coolant from the Lidea LK Type 33 radiator for a long period (in total, it is allowed to leave the device without water for no more than 15 days during the year)
• In case of installation of Lidea LK Type 33 radiators with taps on the inlets, in order to avoid water hammer, it is not recommended to open the taps suddenly

Avenue

Technical certificate

Recommendations for use

Certificate of conformity

Rating of the best steel heating radiators

Which radiator manufacturers should you pay attention to?

Having asked a friend or neighbor what the best steel panel radiators are, we mostly hear in response the names of European companies. There are also good reviews about Turkish batteries. Next, we list brands that can really shine with the quality of their products.

Radiators from KERMI

This German brand is distinguished by its new patented Therm X2 technology, as well as the special quality of finishing of its radiators. The special two-layer varnish coating is made according to a unique recipe. Radiators can operate in both two-pipe and single-pipe systems. They are connected from below and have an energy saving mode. Models are available with a factory-set power level.

We wrote more about these radiators in the material: Technical characteristics of Kermi heating radiators, their types and advantages.

Radiators from De'Longhi

This brand of radiators is Italian. They can withstand up to 8.7 bar pressure and up to 110 °C coolant temperature. “Standard” models are connected from the side, “Universal” models with a temperature regulator are connected from the bottom.

Radiators from Biasi SpA

Another Italian company produces radiators using the most advanced technologies. Therefore, the heat transfer of the devices is excellent, and heating is almost instantaneous. They work well at low temperatures. The operating pressure limit is 9 bar.

Radiators from Purmo and Retting Heating

These are Finnish brands of radiators, painted snow-white. They are made from the highest quality cold rolled steel (FePO1). The temperature limit is up to 95 ° C, the pressure limit is 10 bar.

Radiators from KORADO

These radiators are made by a Czech company. They can be with one, two or three rows of panels. A wide range of colors and 10 types of models, convenient brackets included, and a small volume of coolant are the advantages of these radiators. Pressure limit – 8.7 bar. Temperature: 110 degrees.

Radiators from RADSON

This Belgian company makes unique radiators. Two convector fins on each channel of the panels provide high heat transfer. This allows you to reduce the volume of coolant. The company also produces a Compact model, which is really very compact and convenient for small rooms. Another advantage of the radiators of the Belgian company is painting using KTL2 technology. The coating thickness is at least 50 microns, not a single unpainted point - all this does not give corrosion the slightest chance. Pressure limit – 10 bar.

Radiators from Demrad

These radiators are Turkish, and the equipment for their production is purchased in Germany. This is an automated line and welding units. The steel from which radiators are made is highly resistant to corrosion. Additional protection is provided by a zinc phosphate coating reinforced with enamel. Pressure limit – 8.7 bar.

Comparative characteristics of radiators type 22, 500 mm wide, 500 mm long from popular manufacturers:

* All data is taken from official sources of manufacturers

The best steel panel radiators

Panel radiators are quite simple to manufacture, which is why their price is affordable. The steel sheet is stamped and then welded. The result is a single or multi-panel structure. Experts liked several modern models.

Kermi FKO 22 500

The model is suitable for installation in the private sector or country house with an autonomous heating system. Sold only in white, painted with protective enamel that is resistant to wear. Type – panel (quantity – 2), connection method – side.

The structure is placed on the wall. Manufactured from stainless steel in compliance with technical requirements. The center distance is 446 mm. Operates at a maximum operating temperature of up to 110 degrees Celsius. The operating pressure should not exceed 10 bar, then the device will last over 10 years. The dimensions of the device (height and thickness) are 500 and 100 mm, respectively.

The average cost is 2300 rubles.

Kermi FKO 22 500

Advantages:

• German reliability;
• With proper use, the device will last a long period;
• Exterior design;
• Easy installation;
• Quality;
• Price;
• Gives off heat well.

Flaws:

• Not found.

ELSEN ERK 11 600

Rating: 4.8

The excellent design of the ELSEN ERK 11 600 radiator attracts the attention of buyers. The English device is made in different countries, so the price may fluctuate. The production operates a multi-stage quality control system. All operations are performed automatically, minimizing the influence of the human factor. For the manufacture of the heating battery, high-quality steel with a thickness of 1.25 mm is used; the finished product can withstand pressure up to 16 atm. Experts note serious anti-corrosion preparation. It includes operations such as phosphating, priming and painting. Considering its affordability, the model deserves second place in the ranking.

On forums, steel radiators ELSEN are often compared with the standard Kermi. But only original products deserve praise.

Features of the production of steel panel-type radiators

At the first stage, panels are made. For this purpose, steel sheets are used, which are given the desired shape using a powerful press.

So-called convectors are created from metal strips - parts of future heating batteries designed to increase heat transfer.

The panels are connected by welding. As a result, channels are formed inside the resulting structure through which hot water will circulate.

Convectors are attached to the connected panels.

Panel radiators, which you can buy in Moscow from us, are equipped with fittings so that they can be included in the heating system.

We recommend: A stove being used in a garage: pros and cons, drawings, how to make it yourself, video

At the last stage, the finished structure is painted. For this, powder coating or cathodic electrophoresis is most often used. A coating that is resistant to external influences and very durable is created on steel surfaces. It, firstly, protects the metal from corrosion and other damage, and secondly, it ensures the aesthetics of panel radiators, the prices of which are quite affordable.

The best tubular steel radiators

Tubular steel radiators are a system of several vertical sections. They connect to each other at the top and bottom points of contact. Tubular batteries are characterized by high heat transfer and high cost. Experts have identified several worthy devices.

Zehnder Charleston 2180 1792

Rating: 4.9

For many manufacturers, tubular radiators Zehnder Charleston 2180 1792 are the standard. Therefore, on the domestic market you can find many copies that are cheaper, but in many respects worse than the sample. The German manufacturer boasts a glorious history; the first tubular steel radiator was patented in 1930 by the company's founder, Jacob Zehnder. Constant development allows the brand to remain a leader. The device has a domestic hygiene certificate obtained from the Novosibirsk Research Institute. The anti-corrosion coating will not emit harmful compounds, so the radiator is recommended for use in children's institutions.

Installers and users in reviews praise the German battery for its excellent quality and unique style. Only the high price becomes a deterrent to purchase.

Purmo Delta Laserline 2180

Rating: 4.8

The Finnish manufacturer offers its customers the opportunity to choose colors. The tubular steel radiator Purmo Delta Laserline 218 is equipped with a mounting kit with 4 mounting points. Heating devices are supplied for sale with both bottom and side connection options. Experts note the possibility of installing a radiator both front and rear. Laser welding affects the ideal smoothness and evenness of the seams. When viewed from the side, the shape of the outer pipes resembles the letter D, which is reflected in the designation of the series. This configuration was not chosen for aesthetic reasons. Heating of the room occurs faster.

Both experts and users note the high quality of Finnish devices. If they are inferior in some way to the leader of the rating, it is only at a higher price.

Dia Norm Delta Standard 3057

Rating: 4.7

In a wide power range, the user can choose the Dia Norm Delta Standart 3057 radiator. The devices are supplied to the retail chain in a variety of designs, with bottom or side connections. For example, the 8-section version with side trim has a power of 512 W, and for its 30-section counterpart this figure reaches 2820 W. In modern manufacturing, the radiator is not inferior to the leaders in the rating. The battery is made of steel 1.25 mm thick. The elements are welded using laser equipment, and the coating is applied by electrostatic spraying.

The quality of German products is at a high level, this is confirmed by users in reviews. Difficulties arise only with independent connection. The model takes 3rd place in the ranking.

Zehnder Charleston 3057 566

Rating: 4.7

Another representative of the glorious German family came to the attention of the expert community. The sections of the Zehnder Charleston 3057 566 model are tubular in shape and connected at the manifold part by welding. With a radiator height of 570 mm, the width of the 10-section structure is 460 mm. The manufacturer took a particularly careful approach to protecting the steel product from corrosion. The five-stage technology includes cleaning, priming, electrostatic powder coating, drying and antistatic treatment.

The model is inferior to the rating leaders in such technical parameters as heat transfer (3420 W). At the same time, the radiator looks more attractive from a cost point of view.

The best panel steel radiators

Now let's move on to the rating of steel radiators, which has collected popular product series based on customer reviews and product characteristics. Let's start with panel radiators, which are affordable and light in weight.

Kermi FKO 22 radiator series

This series of radiators is ergonomic and affordable. The design easily fits into any interior.

Characteristics of the model range

Panel radiators of this series are made of structural steel. The length of the models varies from 400 to 3000 mm, and the height is 300-900 mm. The depth of the radiators is standard and is always 100 mm. The heating radiator is designed to transfer coolant with a temperature of 110 degrees.

All products in the range can withstand pressure of 10 bar. Therm x2 technology was used in their production, increasing heat transfer. The power of the radiator depends on the dimensions of the specific model. For example, 900x600 mm produces 1898 W.

Design features:

• The design of the steel radiator is strictly rectangular with sharp edges;
• to start convection, there is ample perforation on the top panel;
• the front side with relief makes them more interesting;
• two-way side connection;
• center distance 250/500/850 mm;
• wall mount included;
• The approximate coolant capacity is 5 liters per 0.5 m² of radiator area.

Radiator series Kermi FKV 22

Another series of radiators from the German brand Kermi, with more “blown” shapes. It stands out for its increased reliability and long service life. Radiators are available in a wide range of colors including pink, red, blue, green and orange.

Characteristics of the model range

The series of panel radiators is available with a height of 500 mm and a width from 400 to 1500 mm. The smallest panel, 400x500, weighs 12 kg and is capable of delivering 772 W of power. Crimping pressure is 13 atm, working pressure is 10 atm. The maximum permitted coolant temperature is 110 degrees. Plain water or a glycol mixture can be used as a coolant.

Design features:

• bottom connection;
• thickness of the metal sheet of the front panel - 1.25 mm;
• possible location of the valve both on the right and on the left;
• ½ thread for connection to heating pipes.

Buderus Logatrend VK-Profi 22 radiator series

A series of panel radiators with increased depth of relief on the façade. The manufacturer claims an average service life of up to 50 years.

Characteristics of the model range

The series is represented by radiators of various sizes. The smallest representative is the 300x400 mm model, which produces 475 W. This design weighs 6.7 kg and holds 1.7 liters of coolant. The largest representative is a radiator measuring 2000x900 mm with a power of 5816 W. All models are designed for a working pressure of 8.7 bar. The radiators are powder coated and available in six RAL colours.

We recommend: Features of exhaust pipes for heating boilers

Design features:

• the top panel for hot air outlet is distinguished by thin bridges that reduce flow resistance;
• bottom and side connection;
• welded fins to both heating panels;
• adapters for mounting brackets are provided;
• the center distance varies from 250 to 500 mm;
• steel thickness 1.2 mm;
• external thread for connection ¾;
• the built-in thermal valve can be on the right or left.

Kermi FTV(FKV) 22 500 500

Well-known German panel heating radiators are distinguished by high reliability and quality at a relatively low cost. There are radiators with side (FTV in the name) and bottom (FKV) connections.

Reliability is achieved by the technology of connecting elements, the thickness of steel sheets of 1.25 mm and their quality, as well as painting technology - KEF. As we have already mentioned, this is the most effective painting method, in which the devices are resistant to corrosion and do not emit harmful substances when heated to extreme temperatures.

All radiators in the line have a working pressure of 10 atm, tested with a system pressure of 13 atmospheres. More detailed characteristics are given in the final comparative table. Cost – 5,300-5,600 rubles. (panel 500×500).

Zehnder Charleston 3050 500 1196

A German manufacturer whose steel tubular radiators are considered one of the best on the market, thanks to time-tested quality. The batteries are capable of operating with a system pressure of up to 10 atm, have an aesthetic appearance and optimal heat transfer.

However, despite the 5-stage treatment, it is necessary to use radiators with caution in a domestic dirty central heating system subject to pressure changes. Cost – 33,000-37,000 rubles (for a model of 26 sections).

Arbonia 2180 1800 540

Tall vertical radiators of another German brand, designed for installation in non-standard places. The radiator is the thinnest among analogs (depth 65 mm), maintaining optimal heat transfer, does not require masking and can be combined with almost any design, focusing attention on itself. On request they can be painted in any color.

View of the model in the interior.

During the practice of operation, no incidents with the quality of the devices were observed. Prices for 12 sections with a heat output of 1560 W are in the range of 24,000-26,000 rubles.

Sunerzha Estet 500 5008

A model of tubular steel radiators that is gaining popularity on the Russian market. Heating devices have increased heat transfer and an unusual aesthetic appearance. Estet models are designed for a working pressure of 25 atm, which implies use in the most extreme conditions, including in apartment buildings with 10 storeys or more.

View of the model in the interior.

The disadvantage is the huge weight and no less high cost - on average 50,000 rubles for a structure of 8 sections with a heat output of 1264 W.

KZTO RS 2-500 1150

Another well-known model of Russian-made steel tubular heating radiators, characterized by adaptation to domestic conditions of heating systems. Maximum operating pressure up to 15 atmospheres and coolant temperature up to 130°C are ensured by especially thick walls. Radiators have optimal heat transfer performance and low cost for tubular radiators.

However, according to practice and customer reviews, questions about quality often arise, which, unfortunately, is typical for most domestic manufacturers. The price for a model of 28 sections with a heat output of 1960 W is 14,000-15,000 rubles.

Buderus Logatrend K-Profil 22 500 500

Another model from an equally famous German manufacturer. It is not inferior in quality to stamping, welding and processing of elements, is equipped with a thermostat to regulate the temperature of the coolant, and at the same time has a lower cost - 80-90% cheaper. However, it has a lower operating pressure - 8.7 atmospheres, which carries a high risk of depressurization when used in a domestic central heating system.

However, radiators are among the best for use in individual heating of a private home. Cost – 2,600-2,800 rubles (500×500).

ELSEN ERK 22 500 500

Panel radiators from a Czech company known for using the latest technologies in the production of heating equipment. The models in the line have increased heat transfer by 25-30% compared to the previously mentioned analogues. During production, the “Low Seams” technology is used: by bending solid sheets, rather than welding their parts, the number of welds, which are the most vulnerable points of steel panel radiators, is reduced.

The heating device is designed for a standard operating pressure of 10 atmospheres, however, the risk of leaks during operation is significantly reduced, and the service life declared by the manufacturer is at least 30 years. Warranty period – 12 years. The disadvantage is the non-standard center distance, for example, for the specified model (height 500 mm) it is 445 mm. This must be taken into account when designing. The cost of a panel 500×500 is 3,500-3,900 rubles.

Prado Classic 22 500 500

Steel heating devices of the Russian city of Izhevsk. They can withstand operating pressure up to 9 atm, have high heat transfer and resistance to contamination and extreme heating of the coolant (up to 120°C). For manufacturing, steel sheets with a thickness of 1.4 mm are used, which has a positive effect on service life.

The disadvantage is the less aesthetic appearance and the still imperfect quality of the Russian assembly, however, since 2006 (beginning of installation in private and apartment buildings), no serious incidents have arisen during operation. The cost of a 500×500 panel is 3,000-3,500 rubles.

Steel panel radiator Korado Radik Klassik RK 11-500-1200

• Manufacturer Korado
• 10 year warranty
• Manufacturer's article number 1150401033
• Country of origin: Bulgaria

• Heat dissipation 1253 W
• Radiator type Steel panel
• Center distance 450 mm
• Panel radiator type Type 11
• Connecting a panel radiator Side

Steel panel radiator Kermi FKV 22-500-1000

• Manufacturer Kermi
• 10 year warranty
• Manufacturer part number FTV220501001R2Z
• Country of origin: Germany

• Heat output 1930 W
• Radiator type Steel panel
• Panel radiator type Type 22
• Connecting a panel radiator Lower
• Operating pressure 10 bar

Steel panel radiator Purmo Compact C 22/500/1000

• Manufacturer Purmo
• 10 year warranty
• Manufacturer's article number 730204023
• Country of origin: Poland

• Heat dissipation 1857 W
• Radiator type Steel panel
• Center distance 450 mm
• Panel radiator type Type 22
• Connecting a panel radiator Side

Steel panel radiator Buderus Logatrend K-Profil 22 500 600

• Manufacturer Buderus
• 5 year warranty
• Manufacturer's article number 7724105506
• Country of origin: Russia

• Volume 3.78 l
• Heat dissipation 829.2 W
• Radiator type Steel panel
• Center distance 450 mm
• Material steel

Steel panel radiator Prado Classic 22x300x800

• Manufacturer Prado
• 10 year warranty
• Manufacturer's article number 1150305003
• Country of origin: Russia

• Heat dissipation 1107 W
• Radiator type Steel panel
• Center distance 250 mm
• Panel radiator type Type 22
• Connecting a panel radiator Side

Steel panel radiator Elsen ERV type 22 500×800

• Manufacturer Elsen
• 10 year warranty
• Manufacturer part number ERV220508
• Country of origin: Bulgaria

• Heat dissipation 1441 W
• Radiator type Steel panel
• Panel radiator type Type 22
• Connecting a panel radiator Lower
• Length 800 mm

Steel panel radiator Lidea LK 22-506 (22x500x600)

• Manufacturer Lideya
• 5 year warranty
• Country of origin: Belarus

• Volume 3.9 l
• Heat dissipation 1034 W
• Radiator size LK 22-506
• Weight, kg 17.7
• Nominal heat flux at dT =70C, W 1295

The best tubular steel radiators

The production of tubular radiators is more expensive, so the equipment itself is somewhat more expensive than its panel counterparts.

And although such batteries also “sag” a little in terms of heat transfer, they are able to withstand greater pressure in the system, which makes them suitable for multi-storey buildings with central heating.

In addition, tubular radiators are available in a wider range of designs, can have compact and large sizes (for example, a height of up to 1.5 m), and are also able to withstand higher coolant temperatures, on average 95-120 degrees.

Arbonia 3057 No. 69

5.0★★★★★editorial assessment

100% of buyers recommend this product

Steel radiators from Arbonia are classic pipe radiators with a bottom connection. This saves space during installation and allows them to be connected to pipes laid in floors.

Radiators have a three-pipe design, therefore they are characterized by high heat transfer. They already come with a built-in thermostatic valve that allows you to adjust and maintain the optimal temperature in the room.

Advantages:

• Discreet design;
• Bottom connection;
• High thermal power;
• Three-pipe design;
• Thermostat.

Flaws:

• High price.

Arbonia tubular radiators will look natural in rooms with classic and modern design.

KZTO RS

4.9★★★★★editorial assessment

92% of customers recommend this product▶See review

The RS series of tubular radiators from KZTO is steel equipment with increased thermal power, resistant to high pressure.

The batteries can withstand up to 25 bar for a short period of time (operating value is 15 bar), which makes them suitable for installation in multi-storey buildings. Radiators meet the requirements for installation in buildings with increased sanitary and hygienic standards.

KZTO RS devices have an unusual design. They not only effectively heat the room, but are also able to decorate the interior. The collection includes equipment with side and bottom connections, wall or foot mounted, with ½ and ¾ inch connections.

The best compact steel radiators

In cramped conditions or along panoramic windows, the optimal solution is to install compact steel radiators. They will provide effective heating of the room, despite their small dimensions.

The height of such equipment, as a rule, does not exceed 30 cm. More often, compact batteries have a panel design and can be mounted both on the wall and on the floor.

Purmo Ventil Compact CV

4.9★★★★★editorial assessment

96% of buyers recommend this product

A modern compact panel-type radiator has a height of 200 mm. It is suitable for side and bottom connections and can be installed in any heating systems that use both water and antifreeze as a coolant.

The radiator is sold with a built-in thermostatic valve and makes it possible to adjust a comfortable temperature in the room.

The structural parts of the equipment underwent a five-stage treatment, including electrophoresis priming and baking powder paint. This makes the batteries resistant to corrosion, damage, scratches and paint peeling due to high temperatures. They can be mounted on the wall or installed on the floor - legs are purchased separately.

Advantages:

• Thermostatic valve;
• Five-stage metal processing;
• Working with water and antifreeze;
• Bottom and side connection;
• Wall and floor installation.

Flaws:

• Thermal head is purchased separately.

Ventil Compact CV radiators from Purmo are designed for installation in pump heating systems and are capable of operating under pressure up to 10 bar. They will look attractive along panoramic windows.

Bosch Classic K-Profil 22 300x800

4.8★★★★★editorial assessment

90% of buyers recommend this product

Steel radiators have a height of 30 cm. They are capable of operating in heat supply systems in which the operating pressure does not exceed 8.7 bar. The equipment is made in a classic design for panel radiators, painted white.

Each battery has two heating plates and two convectors, which provides the optimal combination of economy and efficiency.

The radiators have undergone deep degreasing, priming, phosphating and hot spraying of paint, which makes them resistant to corrosion and scratches. But if the coating is still damaged, the batteries can be hung on the reverse side - they do not have hanging hooks.

Advantages:

• Double-sided installation;
• Anti-corrosion treatment;
• Reliable coloring;
• High heat dissipation;
• Discreet design.

Flaws:

• No thermostat.

Bosch steel radiators are optimal for autonomous heating. Despite their compact size, they have excellent performance.

ROSTerm 22 300×800

4.8★★★★★editorial assessment

89% of customers recommend this product

Compact batteries with a height of 30 cm are designed for installation in places with limited space, under low windows or in bathrooms. They have a standard operating pressure of 10 bar and are recommended for installation in autonomous heating networks.

The series is represented by panel radiators made in a classic design. The small size of the equipment allows you to save on heating the coolant, since the internal circuit holds no more than 2.45 liters.

Advantages:

• Discreet design;
• Low price;
• Cost-effective;
• Easy installation;
• Safe design.

Flaws:

• Side connection only.

ROSTerm 22 is a budget option for arranging heat supply for private and low-rise buildings, which is suitable for rooms with low windows, as well as for bathrooms.

Which compact steel radiator would you recommend?

• Purmo Ventil Compact CV
• Bosch Classic K-Profil 22 300x800
• ROSTerm 22 300×800

Vote

Main types of steel heating radiators

Steel radiators can have different designs and shapes, vary in design, including even color scheme. Based on their basic design, they are divided into panel and tubular. The first of them consist of one or more panels, and the second of round, rectangular or narrow panels of pipes.

To determine the optimal choice of such heating devices, you need to familiarize yourself with their designs and characteristics in more detail.

Panel radiators

These heat exchangers began to be actively produced in our country in the 70s of the last century. For some time they tried to replace traditional MS-140 radiators made of cast iron, which were the only effective device for central heating of multi-story buildings. At that time, panel batteries did not take root, since in terms of heat transfer, and in terms of the quality of their workmanship and durability, they were significantly inferior to the cast iron version. Those apartment owners who were “lucky” to get steel heating panels tried by all means to replace them with the usual cast iron as soon as possible.

Panel type steel radiator

Many years passed until engineers “reanimated” the previously developed design and improved it. The updated version of panel batteries began to be made from higher quality materials and using the latest technologies.

Modern models of these heating devices are becoming more and more popular, as their performance characteristics have increased significantly, and the price has remained quite “democratic”.

Manufacturing of panel radiators

The production of panel radiators is carried out on special machines, where steel sheets are given the desired shape using stamping. This process includes several stages:

• The first step is stamping steel sheets, usually about 1.25 mm thick.

• Next, two workpieces of the same size, “mirror” in configuration, are connected to each other at the edges by welding

Automated line for the production of steel panel radiators
When stamping metal sheets, vertical channels are extruded onto them, which, when two plates are welded, form a sealed space in the form of peculiar pipes through which the coolant will circulate. To connect the sheets, roller welding is used, which securely fastens the sheets between the formed channels.

Sectional view of a panel steel radiator

• Convectors with U-shaped ribs are also made from steel sheets with a thickness of 0.3÷0.5 mm by stamping.
• After this, convectors are fixed to the finished panels using spot welding, if they are provided for this type of radiator.
• The next step is to weld pipes onto the resulting panels for insertion into the heating circuit pipes.
• Upon completion of welding work, all seams are ground.
• The final stage is painting of the products.

The duration of their operation directly depends on the high-quality painting of heating devices, so this process can be called one of the most important in their manufacture.

Steel is susceptible to corrosion, especially when it comes into contact with water or other chemically aggressive coolant for a long time, so high-quality painting, carried out using a special technology, is necessary.

Painting panels

The process of painting panels is carried out in different ways, and the quality of the products largely depends on which of them was used:

• Immersion of the product in the coloring composition (OP).
• Method using anodic electrophoresis (AEF).
• The third staining method is cathodic electrophoresis (CEP). By the way, it is also used for applying paint to car bodies, and is rightly considered the most advanced for coating steel radiators.

This coating technology is highly reliable and resistant to various influences. The dyeing process is carried out in three stages:

Multilayer coating of steel radiator

— The first stage is the treatment of the steel radiator with a zinc-manganese anti-corrosion compound, which significantly increases the service life of the batteries.

— The second stage is painting the radiator using cathodic electrophoresis. The products are immersed in a dye composition, which is given a positive charge, while the panel is connected to a negative electrode. The process is completed when the paint evenly covers all surfaces of the panel. This layer of paint is a reliable insulator for steel from various aggressive influences.

— The third stage - epoxy powder is applied to the paint, and the products are sent to a chamber with high temperatures to melt this protective layer. After heating and melting the powder, a high-quality glossy coating of the required color is formed on the panel - it is not exposed to ultraviolet rays, and does not turn yellow or fade over time.

When painting metal products that are subject to periodic heating, compositions containing substances such as heavy metals and formaldehyde are not used. The paint used in the dyeing method (CEF) contains only 2% solvent, while when using AEF it contains 9-10%.

Due to the fact that the paint contains a small amount of solvent, the battery, even when heated to extremely high temperatures, will not emit harmful substances.

All finished radiators must be tested under a pressure of 1.3 MPa, and if the products are successful, the manufacturer can safely give a guarantee for their operation for a period of 10–15 years.

When purchasing steel panel batteries, you need to carefully study the accompanying passport with characteristics, where the painting method should be indicated.

In addition, it is recommended to carefully inspect the radiator coating. It must be of high quality on both the front and back surfaces, without cracks, chips and scratches, without paint sagging.

A coating is considered to be of poor quality if the front and back surfaces differ from each other in color or texture smoothness. It is better to discard such products immediately.

Existing types of steel panel radiators

Panel radiators are divided into several types, which are usually divided according to the number of panels and convector heat exchangers in the design. So, a radiator can have one, two or three panels, and one, two or three convectors are installed between them.

Panel radiators can vary significantly in size

If the radiator consists of more than one panel, then walls are usually mounted on its sides, and a grille is installed on top.

The table shows some parameters of standard types of panel radiators.

Now - about the main technical and operational characteristics of the products:

• Panel radiators are designed for a maximum coolant temperature of up to 95÷100 degrees, so at a standard heating system temperature of 70 degrees they will last a long time.
• The operating pressure for these batteries should not exceed 10 bar (1.0 MPa). If the calculated baric loads are exceeded, the welds on the panels may fail, which will lead to an emergency. The standard pressure for a central heating system is 9 bar, but when it is checked before the heating season, water hammer may occur, short-term pressure surges at which can reach 11÷15 bar, which is unacceptable for panel batteries.
• The test pressure of this steel battery is 13 bar (1.3 MPa) - this is the maximum it can withstand. However, you need to take into account that you need to purchase products that have a certain reserve for this parameter.

If you nevertheless decide to install these particular radiators in a house with a central heating system, then in order to guarantee avoiding accidents due to pressure drops and protect heat exchange devices from dangerous loads, it is necessary to use gearboxes that will take the “blow” upon themselves, and in The system itself will maintain a stable coolant pressure.

Possible sizes and power of radiators

Obviously, the functionality of the device, and therefore the heating efficiency, will directly depend on the number of panels in the radiator. Thus, types 10 and 20 batteries, without convectors, radiate heat only from the panel itself, and those radiators on which these functional elements are installed create thermal curtains for the cold coming from the window, as they direct the heated air upward.

Naturally, the power of the battery will depend on its size, which is selected for the heated area and for the specific installation location.

Panel radiators are produced in different dimensional parameters, both in length (usually from 400 to 3000 mm) and in height (from 300 to 900 mm). Therefore, you can choose them for any installation location, both near a panoramic glazed wall and near a high window.

Judging by demand statistics, the most popular panel devices today are types 11, 21 and 22. They can also have different heights and lengths, so if you decide to choose one of these options, then their power, for example, can be previously “estimated” using the data from the table below:

Connection method

For convenient installation of heating radiators in the circuit, manufacturers produce batteries with bottom or side connections. When choosing the right model, this factor must be foreseen in advance, since both options are sometimes required in one heating circuit, depending on the location of the battery installation and the method of laying the pipes.

When using radiators with bottom connections, it becomes possible to completely hide the circuit pipes in floors or walls, or to run them as close to the floor as possible. A battery with a bottom connection is more expensive than radiators connected to the side. In product labeling, they have a special designation - the letter “V”.

Bottom connection of panel radiator

The lateral connection is mainly made from a circuit running along the floor or on vertical risers. Radiators are produced with a right or left connection, and this also needs to be taken into account when drawing up a diagram of the heating system and purchasing batteries.

It should be noted that the side connection is easier than the bottom connection, since it will be much more convenient to carry out installation work. In addition, correct side connection always results in higher heat transfer. With a bottom connection, no matter how beautiful it may look, losses in the efficiency of the heat exchange device (up to 15÷20%) are simply inevitable.

This diagram shows the option of lateral connection of the radiator to the pipes of the vertical riser:

Example of lateral connection on a vertical riser

1 – coolant supply pipe;

2 – return pipe;

3 – steel panel radiator with left side connection;

4 – thermostatic head, which allows you to set the required heating level.

5 – balancing valve for precise adjustment of the system.

Advantages and disadvantages of panel steel heating radiators

Having familiarized yourself with all the characteristics of panel radiators, as a result, you can highlight all their “pros” and “cons”.

The advantages of such devices include the following qualities:

• Thanks to the integral design of the radiator, installation is quite quick. The device only needs to be hung on brackets mounted in the walls and embedded into the heating circuit. However, such inseparability can be considered not only a “plus”, but in some cases also a “minus”, since if an emergency occurs, the radiator will have to be completely replaced. In a sectional battery, it is possible to replace only failed sections.
• High heat transfer, which occurs due to a fairly large metal surface that is heated and gives off heat, as well as convectors that create directional movement of heated air.

Characteristic picture of the distribution of heat released from a panel radiator

• Economical. Panel radiators require a small volume of coolant, which means less energy is required to heat it. Therefore, according to calculations, when using them, energy savings reach 35% compared to cast iron batteries.
• It is difficult to get injured on the surface of the panels, since there is no pronounced ribbing with traumatic angles - this factor is especially important if there is a small child in the house. Even if he hits a smooth steel surface, he will not receive serious injuries.
• For this type of device you do not have to purchase protective or decorative screens, since their surfaces already have a neat appearance.

The disadvantages of panel batteries are the following:

• Low resistance to sudden changes in coolant pressure, since the highest quality weld can crack if a water hammer occurs. Therefore, in a central heating system, a gearbox must be built into the circuit, which will “dampen” the water hammer.
• Panel radiators quickly fail when using low-quality coolant. Unfortunately, the central heating system usually cannot “boast” of its high quality, and a large amount of dirt and scale is deposited on the inner walls of the radiators, which contributes to clogging of the channels and the appearance of pockets of corrosion.
• Radiator panels are not resistant to mechanical stress and therefore require careful transportation. Also, when using them, it is necessary to avoid impacts and scratches, for example, when rearranging furniture.

Tubular radiators

Features of manufacturing tubular radiators

Another option for steel heating devices are tubular radiators, which are also produced by stamping. This type of battery has several variations with the same operating principle, so their production is somewhat different.

Representatives of the “family” of tubular radiators

For some, even tubes of different diameters are used, installed vertically, and then connected by upper and lower horizontal collectors.

Read about vertical heating radiators, as well as how to choose the best option, in a new article on our portal.

Others are made in sections, somewhat reminiscent of cast iron, which are joined together by welding. But be that as it may, all tubular radiators are always a non-separable welded structure.

Despite this “sectionality”, steel radiators are always a non-separable, complete structure

Tubular batteries are assembled from stamped steel blanks made of steel 1.5÷2 mm thick.

The process of their manufacture takes place in the following sequence:

• Halves of tubular radiator sections are stamped from steel sheets.
• Next, the individual halves are connected by contact welding using special equipment.
• The next step is to grind the finished sections to remove burrs and protrusions left after welding.
• After this, the polished elements of the section are connected to each other to form a radiator, also by welding.
• The welds are then ground again.
• The next stage is testing the products for leaks - this process is carried out in a special test bath.
• Finished and tested radiators are sent to the painting line. It occurs in the same way as when coating panel batteries, using the same coloring compounds.

Painting line for tubular radiators

• After painting, the radiators enter high-temperature chambers to melt the epoxy coating.

Blanks for other tubular radiator designs are made slightly differently.

• For them, pipes of the required height are cut, which will serve as convectors. They are completely brewed on the bottom side, and left open on the top side.
• The pipes are fixed by spot welding on horizontal collectors through which the coolant will flow, giving off heat to the convector pipes.
• Upon completion of assembly, the welding seams of the radiators are polished, and the products are sent to the line for applying decorative and protective coating.
• On some of the radiators, the upper openings of the convector pipes are decorated with nickel-plated rings.

Various types of convector tubes for radiators
There are several more quite elegant designs of tubular radiators that can be matched to any design project. Moreover, they are not always made in the form of pipes - sometimes they can be hollow panels mounted on collector pipes through which the coolant circulates.

Such radiators also belong to the category of tubular

Main technical characteristics of tubular heating radiators

Despite the fact that tubular radiators differ in their design, their characteristics are almost identical. It is characteristic that such devices usually surpass panel options in heat transfer. But, it should be noted that their cost can be much higher.

• Almost all models of tubular radiators are equipped with outlets for bottom and side connections.
• When choosing these radiators, you must also take into account what pressure they are designed for, since in a central heating system, as mentioned above, pressure surges can reach 10÷15 bar
• The maximum coolant temperature is from 100 to 120 degrees.

Tubular radiators can be quite large in size

• Such radiators are produced in a very wide range of sizes and shapes:

— Height varies from 20 to 1500 mm.

— Length can be up to 1400 mm.

— The depth of radiators ranges from 40 to 292 mm.

Advantages and disadvantages of tubular steel heating radiators

Tubular radiators are quite popular, especially for installation in private houses with constant moderate operating pressure without drops and water hammer. Their popularity is explained by a number of positive qualities :

• Uniform heating of the surfaces of tubular radiators quickly ensures a comfortable temperature in the rooms.
• High heat transfer of devices.
• Easy to install and operate.
• Thanks to the smooth surfaces of tubular radiators, layers of dust do not accumulate on them, so they are easy to care for. Due to the fact that batteries do not collect dust and dirt, they are recognized as complying with existing sanitary and hygienic standards.

To care for tubular radiators, it is recommended to purchase a special brush

• The ability to adjust the temperature in the room, since this type of battery may well be equipped with a thermostatic regulator.

Tubular radiator equipped with thermostatic regulator

• A very wide range of varieties of design solutions. Some of the tubular battery models are equipped with shelves or wooden panels for sitting, which can also be used for drying clothes or shoes.

Tubular radiator with shelf-seat
The kit with other options for heating devices may include special brackets used for drying towels. Such radiators are perfect for installation in bathrooms, washrooms, and also in the kitchen.

Radiator with bracket for drying towels

There are also completely unusual models, height from floor to ceiling, capable of dividing rooms into different zones.

• Tubular radiators are quite safe from the point of view of accidental injuries, since they have “soft” rounded shapes, so they can be installed in children’s rooms.

The disadvantages of these batteries include their following qualities:

• The instability of the manufacturing material to corrosive processes, especially if radiators are installed in a central heating system where the coolant is not of high quality.
• High prices for such devices.
• Instability to accentuated mechanical stress.

Steel heating radiators - updated classics

Steel heating radiators are intended for installation primarily in private residential sector or apartment buildings and business centers with individual heating points. At the same time, flat batteries are advantageous in terms of price/durability/ease of installation and, importantly, in terms of aesthetic appearance. You can buy steel heating radiators and see their strength from your own experience using our online plumbing store.

Design features and parameters of steel heating radiators

In its simplest form, this model is a flat panel made of two sheets of steel welded around the perimeter. The space between steel heating radiators is filled with a coolant that transfers heat to the metal, which, in turn, radiates heat into the room (like a stove or fireplace).

Modern models combine 1-3 panels with convection grilles between them for more efficient heat transfer (radiation plus air heating).

The products are of fixed sizes (as opposed to prefabricated sectional ones), therefore, versions of the required power are selected immediately - the data is indicated by the manufacturer in the descriptions (at the rate of 1 kW per 10 m2 of serviced area).

Operating pressures are 10–12 atm, so in utility networks there is a risk of swelling due to water hammer.

Advantages of heating radiators

These models of heating batteries have many advantages over products made from other materials:

• steel conducts heat better than cast iron, and worse than aluminum. Therefore, steel heating radiators are an intermediate option between aluminum and cast iron sectional radiators;
• relatively inexpensive;
• do not require additional assembly operations;
• a large number of designs in size, suitable for installation both under a low window sill and under a high window;
• easy to maintain - you can buy steel heating radiators and forget about the hassle of cleaning. The panels can be easily wiped clean from dust, and the convectors can be cleaned with a vacuum cleaner.

To prevent corrosion, galvanized sheet metal is used, and the outside of the battery parts is powder coated. With proper coolant quality (if it is an autonomous system, and the owner monitors the acidity, hardness of the water and the presence of solid particles in it), steel panel radiators last at least 10 years.

Designs and types of steel radiators

Since steel is a high-tech material, it was precisely because of these properties that it was chosen for the production of modern radiators. Thanks to its ductility, strength and flexibility, very good ability to “hold” a weld and high thermal conductivity (and this is the most important thing in this material), steel has become exactly the material that ensures compliance with all requirements when creating heating systems and radiators in particular.

These heating radiators come in two main types:

• panel option;
• tubular.

The first type, in its design, has from one to three panels inside the product itself. The panels have their own structure. Inside each of them there are two flat profiles welded along the contour. These panels are made using the cheapest method of modern technology - stamping. Special oval-shaped channels are then created to provide directions for heat transport. Simplicity of production, the use of inexpensive roller welding, as well as the most minimal requirements for the assembly process, which is carried out by connecting using pipes, ensures the very low price of this product.

In an effort to increase the heat transfer of radiators, designers provide for the possibility of adding external fins to their panel types. For this purpose, especially thin steel sheets are used, which ensures their rapid heating and the same rate of heat transfer. The increase in convection, which is achieved by using this design solution, allows you to count on faster heating of the air in the room. When connecting panels in a row, and when several of them are used at once, special casings are used for them, which are attached on both sides. Such radiators are divided into several types, which is determined by the number of heating and convection panels inside each type.