Stainless seamless pipes have found their wide distribution, having competed with welded products.
general description
For the manufacture of suture products usedmetal, which is rolled on the machine, and then brewed along. The seam is cleaned, calibrated, and polished in the next step. As a clear disadvantage of the welded technology, the complexity of bending the sheet, which has an impressive thickness, comes forward. Therefore, these products can not have a wall thickness that exceeds 4 millimeters. The stainless steel represents rather strong metal which is not exposed to corrosion. If the production process complies with GOST, the seamless stainless steel pipes are of high quality, which allows them to be used in the chemical industry when the need arises to transport corrosive substances. For the reason that there is no need to bend a flat sheet, stainless steel pipes may have a wall thickness that is within 32 millimeters.
Characteristics
Stainless seamless tubes are able to undergosignificant pressure, which is within 100 atmospheres. Pipes are not amenable to aggressive chemicals. They are able to withstand sudden changes in temperature. The production is based on the production of a ring-shaped billet, which then undergoes calibration and is drawn out until it reaches the desired dimensions, namely wall thickness, length, etc.
Types of seamless stainless pipes
Stainless seamless pipes, depending ontemperature, which is maintained during the production process, can be hot-deformed, cold-deformed and heat-deformed. Each species has a specific wall thickness, maximum length and a set of diameters.
Можно выделить требования, которые соблюдаются with one technology or another. For example, pipes that are manufactured by hot deformation do not imply heat treatment at the final stage. While cold-formed options are exposed to high temperatures, and then left to cool.
GOST 9940-81
Stainless seamless pipes manufactured bythe above GOST, may have a diameter that varies from 57 to 325 millimeters. While the wall thickness varies from 15 to 32 millimeters. Pipes of unmeasured length can have parameters from 1.5 to 10 meters. The measured length is within certain limits, the maximum deviation for which can be 15 cm in both directions. The steel used for the manufacture of hot-rolled seamless products is governed by GOST 5632. Technologists especially monitor the sulfur content, the volume of which should not be more than 0.02%. Stainless seamless 12H18N10T pipes, GOST of which is specified above, can have a diameter that is in the range from 5 to 273 millimeters. Products may have a wall thickness of 0.2 to 22 millimeters. In this case, the length is equivalent to the limit from 0.75 to 7 meters. If you decide to use the described pipes for these or other works, then you need to be prepared for the fact that their price will be higher compared to welded products that have the same parameters. This can be explained by the technology used in the production process, which involves more impressive spending. Nevertheless, the quality characteristics and properties are more outstanding.
Scope of use
Stainless seamless pipes 12x18h10t GOSTwhich are strictly observed in the production, intended for the transportation of all kinds of environments, including aggressive ones. These products are used in the chemical, medical, food industry, as well as in energy and construction. They are also common in the gas, as well as oil-producing and refining industries. If we are talking about a diameter of 15 millimeters or more, then we can talk about pipelines that are being set up in particularly important technological zones. Such pipes are used in the construction of steam heating systems, which are operated at high temperatures. You can meet them in chemical laboratories. Quite often they are purchased for the needs of the textile and pulp industry. Stainless seamless 12X18H10T pipes, the diameter of which is medium and is within 114 mm and more, are used in the oil and gas industry, within the framework of chemical enterprises and to meet the needs of the energy industry.
Additional area of use
During production, stainless steel may be exposedpolishing and grinding, then it forms the basis of products used for arranging indoor and outdoor interior design for all kinds of purposes. It should be noted that for the installation of home plumbing, the use of corrosion-resistant seamless pipes can rarely be called technically justified. It is not advisable to purchase seamless stainless steel pipes in private, for the reason that they have a fairly high cost, complexity of installation and processing. Therefore, experts recommend considering the need to use the described materials at home individually in each case.
Additional features of seamless pipes
Stainless seamless pipes 12h18n10t containcomposition in the role of alloying additives titanium, chromium and nickel. Most often, such products are used in the arrangement of pipelines for hot and cold water. Among the qualitative characteristics are the properties that consist in the absence of influence on the composition and overall quality of drinking water.
With the use of steel mentioned brandpipes are made that have not only round, but also oval, as well as rectangular and square sections. The most often non-traditional section is used when it is necessary to create all kinds of metal structures, which are then used to form interior items and for interior decoration. Stainless seamless pipe has a high resistance to acidic media. This quality is maintained even in the case when the product is exposed to high temperatures up to 600 degrees. Found this material is widely used not only in the chemical and medical, but also in the food industry. Such pipes can be welded, forming a sealed and reliable seam. As practice shows, you can count on a fairly long life. All this is due to several reasons, including the technology and the material used in the process.
Conclusion
Stainless seamless pipe is differentunique characteristics of heat resistance and heat resistance. That is why the material is used in the manufacture of equipment, which involves operation at temperatures reaching a limit of 1100 degrees. This applies to pipelines, combustion chambers, as well as high-temperature boilers.
