Stainless Steel Pipe/Tube 1.Grade:304,304L,316,316L,321,317L,310S,904L and so on. 2.Standards:ASTM,JIS,DIN,GB and so on. 1) Commodity: seamless and welded austenitic stainless steel pipes 2) Process method: cold drawn / cold pilgered 3) Surface finish: annealed / cold pilgered4) Material: TP304, TP304L, TP310 / S, TP316L, TP316 / 316L dual grade, TP317L,TP321, TP347 5) Standards: ASTM (ASME) SA / ...