ASME-SA53 GR.A GR.B SA106 GR.A GR.B GR.C ASTM-A178 -A179 A209 A210 GR.A1 GR.C ASTM-A213 GR.T11 T12 T22 T5 T91 T9 T92API 5L GrB X42 X52 X56 X60 X65 X70 X80 PSL1&PSL2 ASME-SA333/A334 GR.1 GR.3 GR.6 ASME-SA335-P11 P12 P22 P5 P9 P91 P23 DIN17175/17176/17179-ST35 ST45 15Mo3 13CrMo44 10CrMo910 standard materials of seamless steel tube, hot rolled steel tube, pipe, pipe distribution pipe, etc.