... , P5, T5, P22 (10CrMo910), T91, P91,A335 P9, A213 T92. Standard: DIN 17175-79 JIS G3467-88 JIS G3458-88 GB5310 ... . 2.Our product comply with the standard of SY/T5037-2000, GB/T9711.1-1997 and API SPEC 5L, the material can ... /3, DIN 1629/4, ASTM A53-2007, ASTM A210-1996, API 5LGrade16Mn, ST35-ST52, Q195-Q345Grade16Mn, St37, St52, St52.4, Q235 ...