Although gas pipelines and industrial pipelines are both pressure pipelines, because of their different functions, attributes, natural environment and social conditions, all links from design, selection of materials, welding construction to production and operation are different, including the calculation formula of the wall thickness of the steel pipe, the material selection and material system, the Charpy impact toughness test temperature, and the qualified value of the impact energy,the standard specification system and welding construction. The historical changes in the compilation of ASME B31.3 and ASME B31.8 in the United States have also inspired us that gas pipelines and industrial pipelines belong to different types of independent pipeline systems. Operation and management shall be carried out on this principle.