... WT thickness: SCH10-SCH160, Material:carbon steel standard:ANSI Piping component carbon steel BW pipe fittingsSize -- Seamless:from ... JISB2311 JISB2312 JISB2313, BS, GB, ISOMaterial --Carbon steel --ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#, ... ASTM A333 GR.6 ; API 5L GRB, X60, X65, X42,X52, ectStainless Steel --ASTM A403 ... P12, P22, P91 ASTM A860 WPHY 70, WPHY 65, WPHY 60, WPHY 52,WPHY 46,WPHY 42, ...