We are a profesional stainless steel pipes manufacturer. ,we are one of the biggest national stainless steel ,round steel,seamless steel tube manufacturing enterprise.and we are integrated with steel-casting,steel-rolling,perforation and trombone.Our company professionally produce seamless steel tubes ,tube blank ,mother pipes, round bar steel,quadrate tube ,precise rolling tube and pipe fitting etc as well as customerised nonstandard product according to the customers' s orderform , you can select the different specifications from them.Stainless steel seamless pipes tubes,round bars:Features: 1) Type: duplex and austenitic 2) Process method: cold drawn ,annealed ,pickled,3) O.T: 6 to 580mm 4) W.t: 0.8 to 12mm 5) Grades: 304, 304L, 316,316L, 321 ,310s6) Standards: a) ASTM (ASME) b) A213/A213M (SA213/SA213M) c) A269/A269M d) A312/A312M (SA312/SA312M) e) A789/A789M (SA789/SA789M) f) A790/A790M (SA790/SA790