... Wall thicknessSCH10S-SCH160,STD,XS,XXSMaterialCarbon steelA234 WPB ,ST37.0 , 20# etc.Stainless steel304,304L,316,316L,A403,A312,1.4301,1 ... .4306,1.4401,1.4571 etc.Alloy steelA234WP12,A234WP11,A234WP22,A234WP5,A234WP9,A335 P11,A335P22,A335 ... P5 ,A335P9 etc. StandardASMEANSI B16.9 , ANSIB16.28DINDIN2605, DIN2615 ,DIN2616,DIN2617, ...