National Standards Boiler Tube Seamless Steel Tubes for Low and Medium Pressure Boiler Standard GB3087 Application It is used for manufacturing heating-pipelines, containers, steaming pipelines of low or medium pressure boilers. (P≤5.88MPa, T≤450℃) Main Steel Tube Grades 10, 20 Other grades can also be provided after consulting with customers. Chemical Composition Standard Grade Chemical Composition […]

National Standards Boiler Tube Seamless Steel Tubes and Pipes for Boiler Standard GB5310 Application It is used for manufacturing heating-pipelines, containers, coal-saving devices, superheaters and reheaters of high pressure boilers. (P>9.8MPa, 450℃<T<650℃) Main Steel Tube Grades 20G, 20MnG, 15MoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG etc. Other grades can also be provided after consulting with customers. Chemical Composition […]

National Standards Tube for Petroleum Cracking Standard GB9948 Application It is used for the seamless steel tubes for furnace, heat exchangers and pipeline in petroleum refining factories. Main Steel Tube Grades 10, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, 1Cr19Ni9, 1Cr19Ni11Nb etc. Other grades can also be provided after consulting with customers. Chemical Composition Grade Chemical Composition […]

National Standards Tube for Chemical Fertilizer Equipments Standard GB6479 Application It is excellent quality carbon steel, low alloy steel and alloy steel pipes for high pressure fertilizer equipments and pipelines. Main Steel Tube Grades 20, 16Mn, Q345 etc. Chemical Composition Grade Chemical Composition % C Si Mn P S 20 0.17-0.24 0.17-0.37 0.35-0.65 ≤0.030 ≤0.030 […]