... 12cr1movg, 15crmog, p91, wb36, 1cr5mo etc Size: 1/2" to 48" Alloy steel seamless pipes Item Material Standard Specification ... pipe15CrMoG,12Cr1MoG20G,A106,ST45-8GB5310-95ASTMA106-99DIN17175-7914-630*2-80Tempersture-resistant seamless steel pipefor high-pressure boilerSeamless ... for pipelineLow and mediun pressureboiled pipe10,20GB3087-199910-530*2-40Over-heat pipe for Low and mediun pressureboiler, ...