304 stainless steel tube of classification there are many 316l stainless steel pipe, the first is seamless and straight seam welded steel pipe, followed by basic classification structure 304 stainless steel pipes and industrial fluid transport 304 stainless steel tube. There is a division of the national standard, Japanese standard, American Standard and the like. Steel numbers and representation ① chemical element with the symbol of international and national symbols to represent the chemical composition, using the Arabic alphabet to represent the content: such as: China, Russia 12CrNi3A ② with a fixed number of digits to represent the steel type series or digital; as : The United States, Japan, 300 series, 400 series, 200 series; ③ with the Latin alphabet and numbers sequence composition, saying only that the use of 304 stainless steel tube carbide precipitation suppression welding, soldering methods can be common. SMAW, carbon content of 0.04% -0.06% of thin cross-sectional dimensions of 304 stainless steel rod 002 may be Austrian, do not tend to intergranular corrosion after welding thick sections for foot, to maintain resistance to intergranular corrosion after welding stainless steel tube After the need for weld heat treatment, if the heat treatment, should be replaced by 304L stainless steel or stable austenitic stainless steel. Stainless steel pipes, stainless steel pipes, Shengda Po-commerce provided by Tianjin Bao Jie Shengda Trading Company. Bao Jie Tianjin Shengda Trading Company (www.sdbjsm.com) strong, credible, in Tianjin's daily hardware industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengda treasure-commerce and you hand into the brilliant, for a better future!