stainless steel pipe and tube standard:ASTMA213/312/A269 MATERIAL:201,304,304L 321,316L,310S W.T.:0.6-30MM O.D.:6-30mm stainless steel pipe and tube01) Process method: Cold drawn/cold rolling02) Surface finish: Annealed / cold pilgered / manual polished / mechanical polished03) Materical:201,202,304,304L,304H,321,321H,316,316L,317L,310S,347H04)standard:ASTM A312/A213/A269, JISG3459/3463/3448, ...