... GB5310,ASTM,DIN,BS 4.material:20G,15MoG,12Cr1MoVGseamless high pressure bolier pipe1. material:20G,20MnG,15MoG,12Cr1MoVG,10#, ... conditions:annealed and pickled6. application:for boilers and pressure vessel of medium and low pressure (normally the container and steam ... than 5.88Mpa operating temperature below 450°C );for high pressure boilers (normally the containers steam pipeline and petrochemical ...