Stainless steel rod by the production process can be divided into hot-rolled, cold-forging and drawing three. Hot-rolled stainless steel round bar of size 5.5-250 mm. Where: 5.5-25 mm stainless steel round bar is mostly small straight bundles supply, used for reinforcement, bolts and various mechanical parts; greater than 25 mm stainless steel bar, mainly for the manufacture of mechanical parts or seamless steel billet . 321 In addition to the added titanium elements to reduce the corrosion of the weld material properties than the risk of a similar 304.400 Series - ferritic and martensitic stainless steel 408 stainless steel pipe heat resistance, low corrosion resistance, 11% of Cr, 8% of Ni. 409 - the cheapest model (England), commonly used as automobile exhaust pipe 316l stainless steel pipe, is a ferritic stainless steel (chrome steel). 410 - martensite (high strength chrome steel), good wear resistance, corrosion resistance is poor. 416 - add sulfur to improve the processing performance of materials. 200 Series - chromium - nickel - manganese austenitic stainless steel 300 Series - chromium - nickel austenitic stainless steel 301 - scalability, for molding products. Machine speed can also be hardened. Good weldability. Abrasion resistance and fatigue strength than 304 stainless steel. 302 304 with corrosion resistance, due to relatively high carbon intensity and therefore better. 303 - by adding a small amount of sulfur, phosphorus and make it more cutting processing. 304- that is 18/8 stainless steel. GB grades for 06Cr19Ni10.309- 304 better than temperature resistance. Precision Stainless Steel Pipe | Stainless Steel Pipe | Shengda Po-commerce provided by the Tianjin Shengda Bao Jie Trading Company. Tianjin Shengda Bao Jie Trading Company (www.sdbjsm.com) strong, credible, in Tianjin daily hardware industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengda Po-commerce into the brilliant and you work for a better future!