Pipe factories. Pipe factories and manufacturers of steel and cast iron pipes

IN Russian Federation one of the important industries metallurgical industry is the production of various types and sizes of pipes. The extensive capabilities of the companies provide good prospects for the production of products, and not only pipes: hardware, castings, rolled metal - all this is produced at some factories owned by leading companies. According to the rating, the top five manufacturers steel pipes includes the following companies and metallurgical plants:

TMK(Pipe Metallurgical Company);
OMK(United Metallurgical Company (manufactures, among other things, rolled metal));
ChTPZ;
Severstal;
"Ural Pipe Plant".

Metallurgical plants TMK

TMK is the leader of the Russian market in terms of production volume. The company has metallurgical plants in the country and abroad, both in the CIS countries and abroad, a total of 28 enterprises. It is worth noting that in the global arena of the pipe business, TMK is one of the three leaders. TMK metallurgical plants provide such sectors as energy, mechanical engineering, chemical industry, Agriculture and not only. Behind last year the company produced about 4 million tons of pipe products. The unstable price of the metal in the past year had a negative impact on TMK's profits.

United Metallurgical Company

Second place among domestic producers steel pipes are occupied by the United Metallurgical Company. OMK metallurgical plants produce a wide range of pipes of all possible types, connecting elements for pipelines, the appropriate type of fittings, etc., including rolled metal. In the domestic market, OMK is a leader in the production of large-diameter pipes, automobile springs and railway wheels. Last year, about 1.5 million tons of products were produced, including a variety of rolled metal products. It is worth noting that the price of the metal changed due to currency fluctuations in 2014, which negatively affected the company.

ChTPZ

This company united large production facilities of Pervouralsk and Chelyabinsk: among them the company RIMERA and Uraltrubostal. The main type of products produced are electric-welded pipes of various assortments. Good potential may in the future make the company and its metallurgical plants a leader in providing relevant products to the main sectors of the economy. The main output of ChelPipe is Various types pipes with diameters from 89 to 1420 mm. The output in 2014 amounted to about 2 million tons; in the first half of the year, the price of the metal that was sold amounted to 189 million rubles.

Severstal

The favorable geographical location of the Severstal company (at the intersection of three economic regions) plays an important role in the sale of products. The company's output consists of pipe blanks, hardware, rolled metal, bent profiles and pipes themselves. Over the past year, the company managed to sell about 1.25 million tons of finished products. The cost of the company's products in the first half of last year alone amounted to $740 million.

"Ural Pipe Plant"

UTZ has one of the widest lists of manufactured products; its output includes electric-welded and profile pipes. The company manufactures different kinds metal structures for the construction sector of the economy. The company's metallurgical plants are developing in the field of improving technology and improving product quality, modernizing production lines. The capacity allows the monthly production of about 3.5 thousand tons of finished products - this is not much compared to the leaders, therefore the price of the metal depends minimally on the activities of UTZ.

The development of iron processing technologies can be fully traced by considering the history of the use of cast iron and steel for the manufacture of pipes. The history of cast iron pipelines is usually counted with the creation of underground pipelines at Versailles (1662, master R. Salem, designed by architect A. de Ville), after which cast iron became the main material for water and sewerage pipes. In Russia, cast iron pipes were used to reconstruct the Rostokinsky water pipeline of Moscow (1858 by A. Delvig). The first Russian oil pipeline was built at the Baku-Batumi oil fields (1897-1907 by V.G. Shukhov) with a length of 835 km.

Pipe production volume is an indicator of technological and technical condition heavy industry of any state, and the level of domestic consumption of pipe products is an indicator of the dynamics of the entire economy.

Types of products

The range of item names for pipe products is very extensive. GOST 28548-90 “Steel pipes. Terms and Definitions" gives the following classification:

Seamless steel pipes.
Welded steel pipes.
Soldering steel pipes.
Steel pipes with external or internal protective coating(tires).
Steel pipes with a treated (internal or external) surface.

The classification is based on basic manufacturing technologies. Within each category, the standards define their own requirements, because various industries present their technical requirements. There are GOST standards for pipes for the chemical, oil and gas or nuclear industries. Besides, modern technologies protecting pipes from external and internal factors significantly expands the number of product items.

especially thin-walled,
thin-walled,
thick-walled,
especially thick-walled.

Production technology

There are two basic pipe manufacturing technologies: seamless and welded. Within each technology, there are technological methods that ensure the production of certain standard sizes with the most optimal technical and price parameters.

Seamless technology

The technology is based on plastic deformation of the workpiece. Technologies are distinguished according to the temperature regime of processing in relation to the recrystallization temperature of the iron-carbon (Fe-C) alloy:

Cold-worked.
Hot-deformed.
Heat deformed.

According to technological schemes there are following methods seamless pipe manufacturing:

Forging. It is used for the manufacture of a workpiece (sleeve) for subsequent processing. In addition, forging is used to make pipes from hard-to-deform steels and alloys. A similar method for producing pipes, in terms of the method of formation and processing conditions, can be considered hot pressing.

Rolling. A manufacturing method in which the workpiece passes through a stand with calibrated rolls. When rolling a liner through rollers, a proportional change in the geometry of the pipe occurs - a decrease in wall thickness and an increase in length. There are:

cold-rolled pipes (diameter 5...250 mm, wall thickness 0.3...24 mm, GOST 8734-75) are manufactured directly after forging (piercing) the workpiece, without additional heating. During the rolling process, the part is cooled to a temperature below the crystallization temperature of the Fe-C alloy.
hot-rolled pipes (diameter 20...550 mm, wall thickness of at least 2.5 mm, with a maximum thickness of 75 mm, GOST 8732-78) are manufactured after additional heating above the heating temperature above the recrystallization temperature by 50...70 °C . Heat treatment required.
Heat-rolled pipes are manufactured using an intermediate temperature regime, which simplifies the subsequent heat treatment.

Drawing. A manufacturing method in which the sleeve passes through calibrated holes. Drawing, in terms of names, is associated with temperature conditions process similar to rolling: hot, cold and heat-drawn.

Special technologies.. Technologies of pressing, centrifugal casting and cutting, which do not directly use metal deformation, are used to produce pipes with specific properties or pipes using special materials.

Technologies using welding

Welding the edges of a sheet or strip deformed into a tube occurs in two ways:

Pressure welding, under the influence of deformation forces, when the heated and prepared edges of the strip are closed in a forming die (furnace welding).
Welding of edges is carried out using the electric arc method in a protective environment or submerged arc. Electric welding differs in the position of the seam relative to the axis of the pipe into straight and helical.

Electric arc welding has become widespread due to the development of welding technologies and methods of non-destructive automatic weld quality control.

Industry Position

In the nineties the recession industrial production affected metallurgy and pipe production. Reduction in production volumes by 4.4 times linear meters and 2.6 times in weight terms, compared to 1990, put pipe production on the brink of destruction. The privatized metallurgical industry, until 2000, was subject to restructuring and restrictions between owners. As a result, several financial and industrial groups were formed, which are vertically oriented structures with a fairly independent set of enterprises. Six holdings: Evraz Group, Magnitogorsk Iron and Steel Works (MMK), Severstal Russian Steel, Novolipetsk Iron and Steel Works (NLMK), Metalloinvest and Mechel control about 80% of pipe production. From 2000 to 2007, pipe production in Russia increased 2.7 times in weight terms and reached the level of 1990 of the last century. The main increase in production was achieved in the pipe production segment large diameter(LPD) for the oil and gas industry.

Industry prospects

Industry prospects should be considered in two segments of pipe production: pipe production general purpose and LDP production. In the first segment there is strong pressure from manufacturers of high-tech pipes with anti-corrosion coating and manufacturers of polymer pipes, especially China, Japan and India, who offer large volumes at dumping prices. About $90 billion is required to re-equip production over 10 years. In the LDP segment, the situation is much better due to the relatively high share of new equipment, which produces 40% of LDPs, and participation in government programs construction of new oil and gas pipelines, both on the territory of Russia and outside it.

The production of pipes varies depending on the material of manufacture, the intended purpose of the product, diameter, profile, connection method and other technological factors. Let us consider the features of the production of these products and their brief characteristics.

Classification

Steel products are classified as obsolete pipes for water supply and other systems. They are susceptible to corrosion and therefore require a protective coating. Zinc is often used as it, which increases the price of products.

Cast iron analogues are more resistant to rust, but are not as durable. They differ large mass and when laying they require special reliable fastening. Such structures are used to equip water supply, heating and sewerage systems.

Metallo plastic pipes became very popular. The combination of metal and plastic allows you to achieve excellent results. Making a water supply system from such elements is not at all difficult. The disadvantages of the product include poor thermal stability and the possibility of leakage at the joints.

Plastic pipes include several types polymer products. These include: LDPE polyethylene and cross-linked polymer modifications. They are lightweight, durable, and do not corrode. Among themselves, the species differ in characteristics and properties, but they have general technology production.

Copper pipes are the most expensive option. The material has high technical parameters, resistance to moisture, temperature changes. Thanks to appearance, such products can become a real interior decoration.

Profile pipe production

Let's start the review with the features of the production of the products in question by cold deformation. The manufacturing equipment is a compact machine consisting of a set of rollers through which a pipe is passed. Such devices differ in power and bandwidth. The most powerful units make it possible to produce not only welded pipes, but also seamless ones.

Non-responsible products are predominantly manufactured using devices for producing profile modifications. Such designs are suitable for the furniture industry, as well as the production decorative elements. The materials in question are in demand at various enterprises, but are not suitable for installation where increased reliability is required.

Full technological cycle

A pipe production line using this technology is based on the use of special sheet metal in rolls (strips). It is supplied directly from metallurgical plants. The thickness of the workpieces may vary, which makes it possible to produce structures of the required reliability for various purposes.

Since at the first stage the strip has a wider width than required, it is cut into pieces the right size. The material is processed on a special longitudinal cutting machine. The output is strips with a width of 50 millimeters, which are welded into one continuous element.

The resulting workpiece is wound onto a drum, which ensures an uninterrupted process. The tape is fed to a forming mill equipped with several tanks in which a round, endless part is created. At this stage, cold, unheated steel is predominantly used.

Basic profile pipe

The above manipulations lead to the formation of a workpiece with an open seam. The pipe is passed through which welding is performed using high-frequency currents. As the process progresses, the edges of the product are compressed by rollers, and the melt is squeezed out from the inside and outside. The resulting burr is removed immediately with a cutter.

Further production of pipes using this technology involves cooling the workpiece by exposure to a special emulsion solution. Profiling a part includes the following steps:

Processing of the pipe on rollers, which allows you to achieve the same cross-section along the entire length of the structure.
Next, the pipe is processed from four positions by other rollers, after which finished profile products with a square or round cross-section are obtained.
To achieve an oval design, no additional finishing is required on the second rollers.

At the final stage, profile blanks are cut to specified sizes with the required profile.

Quality control

Finished products undergo a final control procedure. There are two main parameters used for analysis:

Visual inspection carried out by a specialist, which makes it possible to detect defects caused by wear of the rollers or their failure.
Checking with a flaw detector. It allows you to identify possible problems in finished products, invisible to the eye.

To level out internal stresses, which appear in steel after deformation, the finished pipes at all stages of production must be heated and then cooled naturally in air.

Production of plastic pipes

Products made from this material are used in industrial sector and in the private sector. In the production of polyethylene elements, special machines are used - extruders. They are divided into disk, screw and combined models. Screw-type devices are most often used in pipe production. various designs. In such an extruder, the main part is the screw. The operating principle of the machine can be compared with the functionality mechanical meat grinder. The units can be equipped with one or more working elements.

Disc analogues are divided into single- or multi-disc modifications. The extruder works by moving raw materials with special elements that ensure adhesion. The main advantage of this machine is good mixing of polymer granules. The disadvantages include low pressure in work area, which does not make it possible to obtain products with high reliability parameters and correct geometric shape.

Combined (worm-disk) extruders include models equipped with both units. Used when processing polymers with reduced elasticity and viscosity.

Equipment

The plastic pipe production line includes the following elements:

Extruder.
Automatic loading hopper for polyethylene granules.
Dryer.
Automated controller of production stages.
Removable dies.
Pulling device.
Vacuum former and calibrator.
Automatic cooling system with water bath.
Conveyor belt.
Cutting device with cutter.
Automatic styling device finished product.

Technology

The production of HDPE pipes involves the use of extrusion (pushing) technology. It consists of homogenization, controlled softening and plasticization of the supplied raw materials in the extruder. Next, the finished product is formed using a die, followed by cooling and final calibration.

Any plant for the production of polymer pipes is equipped with an extruder receiving hopper. Granulated raw materials are loaded into it. The polymer then enters the working cylinder, equipped with heating elements. Granules from the loading area move to hotter compartments of the tank, the raw materials are melted, homogenized, and the melt is supplied to the forming head (die).

Final stages

The working head determines the shape of the finished product and its quality characteristics. The technological feature is that when feeding the melt, the die has a fixed temperature indicator.

Depending on the head designs, use heating elements flat or cartridge type. Bypassing the external matrix and the forming mandrel, the pipe takes on the appearance of a finished product. During the calibration process, the part enters a vacuum bath, where final shaping takes place. This is done by applying pressure that presses the workpiece against the sizing fixture. Then the products are cooled and transferred to a conveyor equipped with pneumatic track clamps. At the final stage of production polypropylene pipes Standard cutting is performed using cutters or a circular saw.

Own production

Having decided to set up a private line for the production of plastic pipes, first of all you need to take into account what the level of product quality will be. If the products are aimed at furniture companies and small construction companies, a compact machine that produces products for fittings, fences, fences and other non-critical structures is quite suitable.

To organize a line for the production of polymer elements, the necessary set of devices is presented above. The following is a list of equipment for the production of profile pipes from round analogues:

Profile bending installation.
Line for producing blanks from round pipes.
Automated welding unit.
Device for slicing finished products.

The volume of pipe production is an indicator of the technological and technical state of the heavy industry of any state, and the level of domestic consumption of pipe products is an indicator of the dynamics of the entire economy.

Types of products

The range of item names for pipe products is very extensive. GOST 28548-90 “Steel pipes. Terms and Definitions" gives the following classification:

Seamless steel pipes.
Welded steel pipes.
Soldering steel pipes.
Steel pipes with external or internal protective coating (tires).
Steel pipes with a treated (internal or external) surface.

The classification is based on basic manufacturing technologies. Within each category, the standards define their own requirements, because Different industries have their own technical requirements. There are GOST standards for pipes for the chemical, oil and gas or nuclear industries. In addition, modern technologies for protecting pipes from external and internal factors significantly expand the number of product ranges.

especially thin-walled,
thin-walled,
thick-walled,
especially thick-walled.

Production technology

Seamless technology

Cold-worked.
Hot-deformed.
Heat deformed.

According to technological schemes, the following methods for producing seamless pipes are distinguished:

cold-rolled pipes (diameter 5...250 mm, wall thickness 0.3...24 mm, GOST 8734-75) are manufactured directly after forging (piercing) the workpiece, without additional heating. During the rolling process, the part is cooled to a temperature below the crystallization temperature of the Fe-C alloy.
hot-rolled pipes (diameter 20...550 mm, wall thickness of at least 2.5 mm, with a maximum thickness of 75 mm, GOST 8732-78) are manufactured after additional heating above the heating temperature above the recrystallization temperature by 50...70 °C . Heat treatment required.
Heat-rolled pipes are manufactured using an intermediate temperature regime, which simplifies the subsequent heat treatment.

Drawing. A manufacturing method in which the sleeve passes through calibrated holes. Drawing, in terms of its names, is associated with the temperature regime of the process, similar to rolling: hot, cold and heat-drawn.

Technologies using welding

Welding the edges of a sheet or strip deformed into a tube occurs in two ways:

Pressure welding, under the influence of deformation forces, when the heated and prepared edges of the strip are closed in a forming die (furnace welding).
Welding of edges is carried out using the electric arc method in a protective environment or submerged arc. Electric welding differs in the position of the seam relative to the axis of the pipe into straight and helical.

Electric arc welding has become widespread due to the development of welding technologies and methods of non-destructive automatic weld quality control.

Industry Position

In the nineties, the decline in industrial production affected metallurgy and pipe production. A reduction in production volumes by 4.4 times in linear meters and 2.6 times in weight terms, compared to 1990, brought pipe production to the brink of destruction. The privatized metallurgical industry, until 2000, was subject to restructuring and restrictions between owners. As a result, several financial and industrial groups were formed, which are vertically oriented structures with a fairly independent set of enterprises. Six holdings: Evraz Group, Magnitogorsk Iron and Steel Works (MMK), Severstal Russian Steel, Novolipetsk Iron and Steel Works (NLMK), Metalloinvest and Mechel control about 80% of pipe production. From 2000 to 2007, pipe production in Russia increased 2.7 times in weight terms and reached the level of 1990 of the last century. The main increase in production was achieved in the segment of production of large-diameter pipes (LDP) for the oil and gas industry.

Industry prospects

Industry prospects should be considered in two segments of pipe production: general purpose pipe production and LDP production. In the first segment, there is strong pressure from manufacturers of high-tech pipes with anti-corrosion coating and manufacturers of polymer pipes, especially China, Japan and India, who offer large volumes at dumping prices. About $90 billion is required to re-equip production over 10 years. In the LDP segment, the situation is much better due to the relatively high share of new equipment, which produces 40% of LDP, and participation in government programs for the construction of new oil and gas pipelines, both in Russia and outside it.

Steel pipes are most in demand in housing and communal services - for hot and cold water supply, gas supply. These pipe products belong to the category of water and gas pipes (WGP).

Application of water and gas pipes

Steel is the most durable material for universal use. Historically, engineering and communication systems were created on the basis of steel pipes. Its significant disadvantage is its susceptibility to corrosion. As a result, the service life is reduced.

For transportation cold water plastic pipes are preferable. For hot water supply, steel products have no alternative to this day. Yulia Petrichenko, expert

SNiP 2.04.02-84 requires that only metal pipes be used in external water supply networks.

conditional passage: 10-30 cm;
operating pressure: up to 1.5 MPa.

In internal systems transport of cold water and sewerage.
- operating temperature: up to 20 degrees C;
In internal transport systems hot water:
- conditional passage: from 1.5 to 10 cm;
- operating temperature: up to 100 degrees C;
- operating pressure: up to 1 MPa.

SNiP 2.04.05-91 for hot water transport in heating systems provides for the use of steel pipes with the following characteristics:

pipe diameter: from 1.5 to 10 cm;
operating temperature: up to 75 degrees C;
operating pressure: up to 0.45 MPa.

Specification of water and gas pipes

Manufacturers produce welded steel water pipes from 5 types of material:

"St1kp";
"St2kp";
"St1ps" with a high silicon content (up to 0.15%);
“St2ps” with a high silicon content (up to 0.15%);
“08ps” with a high content of manganese (up to 0.65%) and silicon (up to 0.17%), with a reduced content of phosphorus (up to 0.035%) and sulfur (up to 0.04%).

Manufacturers of steel water and gas pipes offer a wide range of products made in accordance with GOST 3262-75:

nominal diameter, cm: 0.6-15;
outside diameter, cm: 1.02-16.5;
wall thickness, cm: 0.18-0.4 (light pipes), 0.2-0.45 (ordinary), 0.25-0.55 (reinforced);
weight of one meter, kg: 0.37-15.88 (light), 0.4-17.81 (ordinary), 0.47-21.63 (reinforced).
length, m: 4-12.

Galvanized pipes are coated with a layer of zinc of at least 30 microns. They are 3% heavier than black steel ones.

The standards establish possible maximum deviations:

by weight, % – max 8;
along curvature, mm – max 2 (conditional passage up to 2 cm), max 1.5 (conditional passage more than 2 cm);
outer diameter with nominal bore up to 4 cm, mm: from -0.5 to +0.4;
outer diameter with a nominal bore of more than 4 cm, %: 11;
wall thickness,%: 15.

The ends of the pipes can be threaded at the request of the buyer. Products with a wall thickness of more than 0.5 cm must be chamfered and the end ring left.

Factories producing steel water and gas pipes

Chelyabinsk Pipe Rolling Plant

The company has been operating since 1942. It is the main production unit of the ChelPipe industrial group, the largest in the pipe production market. Significant funds were invested in the plant, which were used to purchase other enterprises and their parts.

Manufactures all types of pipe products, including reinforced ones, with a nominal bore of 10-80 mm. Product length: 4-8 m. Upon request, products can be subjected to a hydraulic test of 5 MPa.

The manufacturing plant, in addition to black pipes, produces galvanized steel water and gas pipes. It is possible to apply threads and make couplings.

Pervouralsk New Pipe Plant

It was founded in 1732 as an iron production enterprise. Is in Sverdlovsk region, part of the Chelyabinsk plant group. The products include several thousand types of pipe products. Of these, water and gas pipelines occupy a small part.

Specification VGP pipes"Pervouralny Novotrubny Plant":

conditional diameter, cm: 1-5;
diameter, cm: 1.7-6;
wall thickness, cm: 0.2-0.45;
length, m: 4-9.

Pervouralny Zavod produces non-galvanized pipes without threads and couplings.

Seversky Pipe Plant

The company is located in the Sverdlovsk region and was founded in 1739. Electric-welded pipe products have been produced since 1963. last years the plant switched to modern way steelmaking, uses vacuum processing technology to clean steel from impurities. The company has numerous licenses, permits and certificates, including foreign ones.

The manufacturing plant produces two types of welded steel water and gas pipes.

Specification of VGP pipes of Seversky Pipe Plant:

conditional diameter, cm: 8-10;
diameter, cm: 8.85-11.4;
wall thickness, cm: 0.35-0.5;
length, m: 5.9-12.

Korolevsky Pipe Plant

The Korolevsky Pipe Plant holding has been operating since 2004. Production facilities and warehouse areas are located in the Moscow region. Positions itself as the largest metal seller and metal products in the Central region.

The production of steel pipe products is the main activity of the enterprise: a manufacturer of steel water and gas pipes with a volume of up to 17 thousand tons per month.

Specification of VGP pipes of Korolevsky Pipe Plant.

diameter, cm: 1.5-10.8;
wall thickness, cm: 0.25-0.35;
length, m: min 6.

The company has the ability to ship and deliver metal products by railway and motor transport.

Among the advantages of Korolevsky Pipe Plant we can list:

discount system;
possibility of deferred payment;
convenient location;
sales of products from 10 kg;
pipe manufacturing according to technical specifications customer.

The enterprise has existed since 1896. Over the past 15 years, modernization has been carried out: the technology of evacuation of steel was introduced, the open-hearth furnace was replaced by an arc steel-smelting one. The company has received an award from the Government of the Russian Federation, as well as numerous European certificates.

Specification of VGP pipes of the Taganrog Metallurgical Plant.

nominal diameter, cm: 0.8-10;
wall thickness, cm: 0.22-0.45;
length, m: 6; 7.9.

The capacity of the pipe rolling shop is up to 42 thousand tons per month. The main part consists of oil pipeline and drilling pipe products. The share of water and gas pipes is small. 30% of the plant's products are manufactured for sale abroad.

Magnitogorsk Iron and Steel Works

"Magnitogorsk Iron and Steel Works" is a phenomenon of Soviet industrialization. The plant was built in two years and began producing cast iron in 1932. Since then, the company has been a leader in the ferrous metallurgy. It has its own full cycle production, from the preparation of raw materials to the production of metal products.

Unlike factories that focus on the production of industrial tubular products, Magnitogorsk Plant specializes in a wide range of metal products. Welded steel water and gas pipes are one of the priority areas manufacturer's activities. The company produces medium-sized water and gas products with an outer diameter from 2.13 cm to 5 cm.

Almetyevsk Pipe Plant

The plant is located in Tatarstan in the city of the same name and has been operating since 1966. Several years ago, a high-speed modern Italian-made mill was installed at the enterprise, which ensures the production of up to 50 thousand tons of VGP products per year. The manufacturer was one of the first in the country to begin producing galvanized steel water and gas pipes.

Specification of VGP pipes of Almetyevsk Pipe Plant:

nominal diameter, cm: 1.5-8;
wall thickness, cm: 0.25-0.45;
length, m: 5.8-8.

Products and quality management system are standardized and certified by American, German and domestic institutions and meet the requirements of international standards.

Vyksa Metallurgical Plant

The plant is located in the Nizhny Novgorod region and is one of the oldest enterprises in the metallurgical industry (1757). In 2011, the electric pipe welding shop, in which water and gas products are produced, was reconstructed. It was equipped with high-tech mills, allowing the production of up to 25 thousand tons of pipes per year.

Specification of VGP pipes of the Vyksa Metallurgical Plant.

nominal diameter, cm: 0.8-10;
diameter, cm: 1.35-11.4;
wall thickness, cm: 0.2-0.5;

An important advantage of the plant is its location in the European part of Russia, which allows customers to reduce transportation costs.

The enterprise was founded in 1941 at the facilities of the Zaporozhye Metallurgical Plant, which was evacuated during the war. It does not have its own steel production. Possesses good capacities for a wide range of high-quality metal products, including for the production of small and medium-sized tubular products.

Specification of VGP pipes of the Novosibirsk Metallurgical Plant:

nominal diameter, cm: 1.5-5;
diameter, cm: 2.13-6;
wall thickness, cm: 0.28-0.35;
length, m: 6.

Novosibirsk Metallurgical Plant supplies water and gas products without threads and couplings. The manufactured products are subjected to a hydraulic test of 2.4 MPa.

Manufacturers of galvanized and non-galvanized steel water and gas pipes are widely represented in Russia. The vast majority of factories are historically located in the Urals. One of the factories considered is located in Siberia and two in the European part of the country.

Which factories produced water supply and gas pipes which do you use? Or perhaps you are in sales and professional installation engineering communications? Please share your experience in the comments.