... used for low and medium pressure boiler working at a temperature below450°C ,Tubes , economizer, superheater and reheater, petrochemical line pipe etc ... ,20MnG,25MnG,15CrMoG,12Cr2MoG,12Cr1MoVG,12Cr2MoWVTiB,10Cr9Mo1VNbetc.ASTM: Grade A,C,D, Grade A-1,C,BS: 320 CFS, 440,243,620-460,622 ... /TR2, P235TR/TR2, P265TR1/TR2, 195GH, P235GH,TC1,TC2DIN 17175 ST 35.8,ST45.8,ST37.0,ST44.0,ST52.0JIS ...