... API, BS, JIS, GB, DIN BG 24" and 20" ERW PIPE SpecificationsChina StandardSteel GradeStandardseamless steel tubesand pipesfor structural purpose ... GB/T8162-199910, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr, ... tubes and pipes forliquid service GB/T8163-199910, 20, Q295, Q345ASTM A53-98ASTM A192ASME S192JIS G3452-1998FIS ...