Industrial piping Production Standard: ASTM A312 OD:10-325mm WT:0.5-18mm Industrial pipingProcessing Pipes/TubesMain grades:TP304,TP304L,TP316,TP316L,TP316Ti,TP317,TP317L,TP321,TP310S,S32001,S32304,S31500,S31803(S32205),S32750,S32760...Production Standard:ASTM A312ASTM A790GB/T12770-2002GB/T12771-2000HG20537.2-1992HG20537.3-1992 Size:Products:Welded pipeOutside Diameter:10-325mmWall Thickness:0.5 ...