Standard API | ASTM | BS | DIN | DNV | GB | ISO | JIS | KS | LR | NF | Others
GB
Standard Number
GB T5130 (Seamless Steel Pipe For High Pressure Boiler)
Grade 20G 20MnG 25MnG 15MoG 20MoG 12CrMoG 15CrMoG 12Cr2MoG 12Cr1MoVG 12Cr2MoWVTiB 12Cr3MoVSiTiB 10Cr9Mo1VNb 1Cr18Ni9 1Cr19Ni11Nb [ All grade ]