... , SCH60, XS, SCH80., SCH100, SCH120, SCH140, SCH160, XXSStandard --ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 ... JISB2313, BS, GB, ISOMaterial --Carbon steel --ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10 ... ,St.35.8,St.35.8 ASTM A333 GR.6 ; API 5L GRB, X60, X65, X42,X52, ectStainless Steel --ASTM A403 WP304 ...