12Cr1MoVG seamless steel pipe Material: 16mn, 12cr1movg, 15crmog, p91, wb36, 1cr5mo etc Size: 1/2" to 48" Alloy steel ... Cr9MoGB9948-8810-530*1.5-36Boiler pipes for refinery, seamless steel pipe for pipelineLow and mediun pressureboiled pipe10,20GB3087-199910- ... 530*2-40Over-heat pipe for Low and mediun pressureboiler,boilingwater pipe,locomotive pipe.Fluid pipe20,Q345GB/T8163-19998- ...