Sumy pipe steel seamless cold-smoked, hot-smoked steel st20, st45 6-630 mm (Metallobaza) delivery, cutting

Seamless pipes are most often used in those areas where high reliability of the pipeline and the absence of leaks are required. Unlike hot-formed tubes, cold-rolled tubes are better suited to situations where high strength must go hand in hand with reduced structural weight - as required in the assembly of automobiles, aircraft, ships, and often used in the chemical industry. The normative dimensions of pipes and standards in this case look like this: The standard regulating the production of water and gas pipes - GOST 3262-75; The outer diameter of the pipes can range from 10.2 mm to 165 mm with wall thicknesses ranging from 1.8 to 5.5 mm. See also: "What is the diameter of metal pipes - norms and standards"; Depending on the wall thickness, light, ordinary and reinforced products are distinguished; The length of water and gas pipes can be measured and unmeasured, but the dimensions themselves are the same - from 4 to 12 meters; The standard takes into account the possibility of manufacturing galvanized pipes, since they are necessary for the installation of water mains and allow for maximum efficiency and reliability. Various sizes of water pipes allow you to choose the required kit for the project. The allocation of water and gas pipes to a separate category is due to the scope of these products. Technically, they are ordinary straight-seam pipes created by electric welding, but for classification it turned out to be much more convenient to consider them as a separate type of material. This material is mainly used in the laying of gas pipelines and water pipes. Of course, such pipes can also be used in other areas that do not impose special requirements on the material, but then you need to start from the justification of such costs. Conclusion In this article, the main sizes of steel pipes and their scope were considered. The knowledge gained is not exhaustive - for more specifics, it is worth reading articles that describe in detail various types of pipes. Very useful is the table of standard sizes of steel pipes, which describes in detail all their varieties. Seamless steel pipe GOST 8732-78, GOST 8734-75 is a pipe made from a steel billet without longitudinal and transverse seams. Seamless pipes are used in pipelines and boiler plants, machines and units; in shipbuilding, automotive and aircraft industries. When it is impossible to use welded pipes, seamless ones are used, because. the latter are distinguished by high strength, quality and durability, wear resistance and are able to work in operational conditions. Increased strength is important when water with high pressure and temperature flows through the pipeline. Also, seamless pipes have an increased anti-corrosion property - a special coating that protects against aggressive influences. Electric-welded steel pipe Production of seamless pipes. There are 4 ways to manufacture seamless pipes: rolling, drawing, forging and pressing. Seamless pipes according to the manufacturing method and production temperatures are: hot deformed (rolled in a hot state), heat deformed (steel is heated to a temperature not exceeding the recrystallization temperature) and cold deformed (rolled without preheating); by wall thickness: thick-walled and thin-walled. Seamless hot-formed steel pipes GOST 8732-78 General purpose seamless steel pipes manufactured in OD, wall thickness and length. The production of seamless hot-formed steel pipes is carried out by hot rolling, after which the pipes are subjected to additional cold rolling. These pipes have increased strength and heat resistance, and therefore this type of pipe is used when installing a pipeline with water, gas, steam or oil products. And also they are widely used in aircraft and mechanical engineering, in the construction of boiler facilities. The mass of 1 m of pipes is calculated by the formula: M = 0.02466 x S (Dn-S), where Dn - outer diameter, mm; S - wall thickness, mm Assortment of steel seamless hot-formed pipes The outer diameter of these pipes ranges from 25 to 700 mm inclusive. The wall thickness ranges from 2.5 mm to 75 mm. Steel seamless hot-formed come in different thicknesses and diameters. Depending on the ratio of these values, pipes are distinguished: extra-thin-walled, thin-walled, thick-walled, extra-thick-walled. Along the length of the pipe, seamless hot-formed pipes are made: random length (4-12.5m) measured length - within unmeasured length, a multiple of the measured length - within the random length with an allowance for each cut of 5 mm approximate length - within unmeasured length Seamless hot-formed pipes are represented by steel: steel 10, st 20, st35, st 45, st40X, st09G2S, 30KhGSA. The curvature of any section of the pipe per 1 m of length should not exceed: - 1.5 mm - for pipes with wall thickness up to 20 mm - 2.0 mm - for pipes with thickness