... 317 347 5.BV ISO SGS schedule 40 stainless steel pipe 316 1.Specifications: stainless steel tube 1.seamless weled 2.OD:6mm-750mm ... 309S,310S,TP316,316,316L,316Ti,316LN,317,317L,321,347, TP347H,etc3.StandardASTM,JIN,DIN,AISI,SUS,GB,EN, ... composition3.Manufacturing Processe1)Process of seamless stainless steel pipes/tubes:2)Process of welded stainless steel pipes/tubes:4.The authentication certificate ...