Nikolaev pipe galvanized with a diameter of 12 mm to 159 mm, shaped steel pipes (Metallobaza) delivery, cutting

Nikolaev pipe galvanized with a diameter of 12 mm to 159 mm, shaped steel pipes (Metallobaza) delivery, cutting

Galvanized pipes are resistant to corrosive changes, their service life reaches 70 years, and the assortment includes categories for various purposes. Zinc has a positive effect on the characteristics of impact resistance, pressure resistance, and kills pathogenic microbes.
Corrosive wear of pipelines annually causes damage to municipal and industrial facilities. Even small leaks mean a loss of funds, and the methods used to detect local defects are quite complex, especially when laying underground.
Zinc coating is applied to tubular products made of carbon or low alloy steel. Over time, a stable layer (patina) is formed on the surface, resistant to mechanical damage, water and oxygen.

     Compared to stainless steel made from chromium-nickel alloys, galvanized analogues have a number of advantages
     Resistant to cold temperatures;
     Resistance to loads (for example, to soil pressure);
     Low price (about 30% lower than stainless steel).

An additional protective layer has a thickness of 30 microns for utility pipes and up to 150 microns for industrial pipes, but the total weight of the structures increases by at least 3%.
The physical and chemical properties of zinc do not allow the use of welding: when heated, the metal ignites. To solve this problem, a thread is provided, or the absence of a coating on the chamfers with a regulated indent.
Application of galvanized pipes
Galvanized steel is durable and hygienic, so the scope of this material is quite wide: supports for road signs and street lighting, fences, frames of greenhouses and greenhouses.
The performance characteristics of galvanized pipes are extremely important for utilities:

     The service life of products in comparison with uncoated steel is increased by 3-4 times.

Zinc resists the formation of lime deposits, increased strength prevents the appearance of microdefects and leaks, which affects the cost of maintenance, since repair work is quite labor-intensive when laying underground. Antiseptic properties are widely used for drinking water supplies.
Galvanized pipes cannot be used in hot water and heating networks with temperatures above 55 Co. When heated, the coating exfoliates, which leads to contamination of the filters, fistulas appear in some areas. Rapid destruction is also observed in chimneys.
Zinc is not resistant to a number of acids, depending on the galvanizing method, transportation of medium aggressive media is allowed. Thermal diffusion and hot methods are suitable for petrochemical industry standards.
Assortment of galvanized pipes
There is no separate standard for zinc coated tubular products. Application technologies can be applied to various categories of rolled metal products. For the convenience of standardization, the galvanizing procedure is carried out on products that meet the standards for their category.
Dimensions of galvanized pipes

     Water and gas pipelines (VGP) - the main purpose: urban utility networks. According to GOST 3262-75, the size of the outer circle: from 10.2 to 165 mm;
     Electrowelded - used in municipal and industrial systems, in construction, agriculture, automotive industry. The assortment is presented in GOST 10704-91, outer diameter: 10-1420 mm;
     Seamless pipes are products of increased resistance to internal loads. Dimensions according to GOST 8734-75 diameter 9-250 mm, according to GOST 32528-2013: 20-550 mm;
     Profiled - have a section other than round: square, rectangular, triangular, trapezoidal. Each type has its own standards.
Galvanized pipes are divided into types according to some aspects.

According to the scope of application, it is possible to divide galvanized products into:

     Plumbing;
     Gas pipelines;
     For heating system;
     Household.
     Household.

Depending on the standards, pipes are divided into:

     Water and gas pipelines according to GOST 3262.
     Electrowelded according to GOST 10704
     Profile.
     Seamless.

The galvanized water and gas pipe is made from steel of the highest quality. It is used exclusively in the field of laying communications indoors. The pipe is made according to GOST 3265-75.
The main advantages of this type of pipe are:

     anti-corrosion properties. Due to the galvanized coating, the pipe rusts 10 times slower than the usual one.
     Convenient for installation, as they are easily cut, welded and molded.
     Service life not less than 25 years at the correct installation.
     Lightweight compared to conventional steel structures.

The manufacturer produces this type of construction according to the size of ordinary steel pipes. Outside, the water and gas pipe is the same size, it differs only in wall thickness. Pipes are manufactured according to medium and high accuracy classes. For the system of water and gas pipelines, heating, pipes of medium accuracy are made, and for the production of parts for structures, the manufacturer useshigh precision standards.
Depending on the wall thickness of the VGP pipes are considered light, standard and reinforced.
A feature of the electric-welded pipe is that they are produced in accordance with GOST 10704. Designs can be of various diameters in the range from 110 mm to 480 mm. All electrowelded pipes have a round section. Such structures are of two types:

     With trimming edges and deburring;
     Just a cut.

The category of the most expensive galvanized pipes are seamless. The price of the product is justified by the complexity of the procedure for their manufacture, expensive equipment and energy consumption.
The advantages of such pipes are:

     Leakage guaranteed.
     High resistance to mechanical stress.
     Resistance to any chemical influences.