Furnizor de țevi din oțel inoxidabil Wenzhou Kaixin China
Țevile din oțel inoxidabil nu numai că au materiale diferite, ca 210 oţel inoxidabil, 304 oţel inoxidabil, 316 oţel inoxidabil, etc., dar au și țevi sudate din oțel inoxidabil și țevi fără sudură din oțel inoxidabil. Există o anumită diferență între cele două, literalmente diferența dintre cusătură și fără sudură, dar in realitate, există o diferență semnificativă în acest proces.
There are differences in the manufacturing process temperature. The manufacturing process of stainless steel seamless pipes is to punch a hole in the stainless steel billet at a temperature of 2200 ° F. At this high temperature, tool steel becomes soft and spiral formed from the hole through stamping and drawing. The disadvantage of stainless steel pipes produced by this process is that the wall thickness of the pipes is uneven and the eccentricity is high. In addition, diferența de grosime a peretelui țevilor fără sudură este mai mare decât cea a țevilor sudate. Țevile sudate din oțel inoxidabil sunt fabricate din foi precise laminate la rece, iar acest proces de fabricație are ca rezultat o toleranță foarte mică asupra grosimii peretelui țevii, iar grosimea peretelui întregii circumferințe este foarte uniformă. Acesta este motivul pentru care țevile sudate sunt mai bune decât țevile fără sudură.
In addition, există diferențe de compoziție chimică între cele două, as the steel composition for producing seamless pipes only meets the basic requirements of astm. The steel used in the production of welded pipes contains chemical components suitable for welding, such as silicon, sulfur, manganese, oxygen, and elements mixed with triangular ferrite in a certain proportion, which can produce a weld melt that is easy to transfer heat during the welding process, so that the entire weld seam is fully welded. Therefore, the manufacturing process requirements for welded pipes will be higher, and the cost will be higher. Steel pipes lacking the above chemical components will produce unstable factors, leading to quality problems in stainless steel pipes. Just like seamless pipes, various unstable factors may occur during the welding process, making it difficult to weld firmly and thoroughly. So for welded and seamless pipes, we need to have a certain understanding in order to make easy choices, because different manufacturing processes and steel requirements can lead to price differences, and certain judgments need to be made when purchasing. Foshan Hongguan Stainless Steel is a professional manufacturer of stainless steel pipes of various specifications, with a large stock warehouse to meet your urgent needs for goods.