Seamless stainless pipes are widely used, competing with welded products.
general description
For the manufacture of suture products, metal is used, which is rolled up on the machine, and then welded along. The formed seam is cleaned, calibrated, and polished in the next step. The obvious disadvantage of welded technology is the difficulty of bending a sheet, which has an impressive thickness. Therefore, such products cannot have a wall thickness that exceeds 4 millimeters. Stainless steel is a fairly strong metal that does not corrode. If GOST is complied with during the production process, seamless stainless pipes are obtained of high quality, which allows them to be used in the chemical industry when it becomes necessary to transport aggressive substances. For the reason that it is not necessary to bend a flat sheet, stainless steel pipes may have a wall thickness that is within 32 millimeters.
Specifications
Seamless stainless pipes are able to undergo significant pressure, which is within 100 atmospheres. Pipes are not susceptible to aggressive chemicals. They are able to withstand sudden changes in temperature. The basis of production is the manufacture of an annular billet, which is then calibrated and stretched until it is possible to achieve the desired dimensions, namely wall thickness, length, etc.
Types of Seamless Stainless Tubes
Seamless stainless steel pipes, depending on the temperature that is maintained during the production process, can be hot-deformed, cold-deformed and heat-deformed. Each variety has a certain wall thickness, maximum length and a set of diameters.
You can highlight the requirements that are observed with a particular technology. For example, pipes made by hot deformation do not require heat treatment at the final stage. While cold-deformed options are exposed to high temperatures, and then left to cool.
GOST 9940-81
Seamless stainless pipes manufactured according to the aforementioned GOST, may have a diameter that varies from 57 to 325 millimeters. Whereas 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. Steel used for the manufacture of hot-formed seamless products is regulated by GOST 5632. Technologists especially monitor the sulfur content, the volume of which should not be more than 0.02%. Seamless stainless steel pipes 12x18n10t, the GOST of which is indicated above, can have a diameter that ranges from 5 to 273 millimeters. Products may have a wall thickness of 0.2 to 22 millimeters. Moreover, the length is equivalent to a limit of 0.75 to 7 meters. If you decide to use the pipes described for carrying out any work, you must 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 expenses. Nevertheless, the quality characteristics and properties are more outstanding.
Area of use
Seamless stainless steel pipes 12x18n10t, GOST of which is strictly observed during production, are intended for transportation of various media, 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 and processing industries. If we are talking about a diameter of 15 millimeters or more, then we can talk about pipelines that are equipped in especially critical technological zones. Such pipes are used in the construction of steam heating systems, which are operated at significant temperatures. You can meet them in chemical laboratories. Quite often they are purchased for the needs of the textile and pulp industries. Seamless stainless steel pipes 12x18n10t, whose diameter is average and is within 114 millimeters and more, are used in the oil and gas industry, as part of chemical enterprises and to meet the needs of the energy industry.
Additional area of use
During production, the stainless steel can be polished and ground, then it forms the basis of the products used to equip the interior and exterior design of premises for various purposes. It is worth noting that for the installation of domestic water supply, the use of corrosion-resistant seamless pipes can rarely be called technically justified. Seamless stainless steel pipes are impractical to purchase privately for the reason that they have a fairly high cost, the complexity of installation and processing. Therefore, experts recommend considering the need to use the described materials at home individually in each individual case.
Additional features of seamless pipes
Seamless stainless steel pipes 12x18n10t contain titanium, chromium and nickel as alloying additives. Most often, such products are used in the arrangement of pipelines for cold and hot water supply. Among the qualitative characteristics, it is possible to single out the properties, which consist in the absence of an effect on the composition and general qualities of drinking water.
Using steel of the mentioned brand, pipes are made that have not only round, but also oval, as well as rectangular and square sections. Most often, an unconventional section is used when it is necessary to create all kinds of metal structures, which are subsequently used to form interior items and for interior decoration. Seamless stainless pipe has high resistance to acidic media. This quality is maintained even 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 lend themselves to welding, forming a tight and reliable seam. As practice shows, you can count on a fairly long life. All this is due to several reasons, including technology and the material used in the process.
Conclusion
Seamless stainless steel pipe has unique characteristics in terms of heat resistance and heat resistance. That is why the material is used in the manufacture of equipment that involves operation at temperatures reaching a limit of 1100 degrees. This applies to pipelines, combustion chambers, as well as high-temperature boilers.