1) China steel pipes/tubes 2) ASTM,DIN,EN,JIS 3) ... )Steel GradeTP304,TP304L, TP304H,TP321, TP321H, TP316, TP316L, TP316Ti,TP317,TP 317L, TP310S(2520), TP347,TP347H; Duplex steel 2205(S32205),S31803 ... A519,etc.Delievery ConditionNBK(+N), GBK(+A), BK(+C) ,BKW(+LC) ,BKS(+SR)ApplicationAutomotive pipeline system;hydraulic system of diesel engine ...