... 2-80Tempersture-resistant seamless steel pipefor high-pressure boilerSeamless pipes for petroleum20, 12CrMo, 15Cr1MoCr5Mo, Cr9MoGB9948-8810-530*1.5- ... 36Boiler pipes for refinery, seamless steel pipe for pipelineLow and mediun pressureboiled pipe10,20GB3087-199910-530 ... ,45,16Mn,Q345BGB/T8162-19996-1020*1.5-100For common structureLine pipeGr.BAPI60-630*1.5-40Carrying gas,water ...