Thickness: 2 - 50 mm Section Shape:Round Usage:transportation of gas, water, oil SPECIFICATIONS:1.OD:10-1200mm2.WT:2-50mm,Length:2-12m3 ... ,TP321,TP316,TP304L,TP316L,A335 P5,ST37,ST35.8,ST52,1.0309,OD1/4"-40",13mm-1000mmWTSCH5,SCH10,SCH20,SCH40,SCH60 ... ,Oil development ect.OD TolleranceD<50mm,+-0.5mm ,D>50MM,+-1%WT TolleranceWT +-12.5%ChemicalC:0.17-0.24%,Si ...