... 2-80Temperature-resistantseamless steel pipefar high-pressure boilerSeamless pipes for petroleum 20, 12CrMo,15CrMo, Cr5Mo, ... *1.5-36Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipelineHigh-pressureSeamless pipes for fertilizer making ... or 3PEApplication:Natural gas, petroleum, chemical industry, electric power, metallurgy thermodynamic fields, water supply engineering, ...