... ,ASTM,DIN,BS 4.material:20G,15MoG,12Cr1MoVGseamless high pressure bolier pipe1. material:20G,20MnG,15MoG,12Cr1MoVG,10 ... than 5.88Mpa operating temperature below 450°C );for high pressure boilers (normally the containers steam pipeline and petrochemical ... Carbon Steel Bolier Tubes for High-PressureApplicationFor seamless carbon steel bolier and superheater tubes for high-pressure serviceSize(mm)O.D ...