I sold 304 stainless steel seamless pipe conduit, pipe, angle iron decorative stainless steel pipe, stainless steel bar and other materials. There are strong processing team can manufacture all kinds of stainless steel products. Sophisticated technology, advanced equipment. Like the tank, pressure tank. Shelves, pipes, stairs, stainless steel doors, the American Iron and Steel Institute and other products flagpole with three digits to indicate a variety of standard grade stainless steel malleable. Where: ① austenitic stainless steel 200 and 300 series of numerals, ② ferritic and martensitic stainless steel 400 series numbers. For example 316l stainless steel, some of the more common austenitic stainless steel is 201, 304, 316 and 310 marks, ③ ferritic stainless steel is marked 430 and 446 stainless steel, martensitic stainless steel is 410,420 and 440C for the tag, duplex (austenitic - ferritic), ④ stainless steel, precipitation hardening stainless steel and high alloy iron content below 50% usually uses proprietary name or trademark name 316l stainless steel | stainless steel pipes | Shengda treasure Billion-commerce provided by Tianjin Bao Jie 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!