The history of the development of pipeline insulation materials in my country is: the pipeline insulation materials used in insulation projects in the 1950s are mainly diatomaceous earth products and asbestos carbon-magnesium boards or asbestos dolomite boards. Wrap cotton cloth as a protective layer. In the 1960s, thermal insulation projects mainly used bulging vermiculite products, glass wool products, and foamed concrete, as well as diatomite products, light clay bricks and slag wool asphalt products. Adopting dry-type heat preservation and wet-type heat preservation in parallel, eliminating cotton cloth wrapping, and using glass silk cloth wrapping or linoleum wrapping instead. In the 1970s, the thermal insulation project mainly used expanded perlite products, as well as expanded vermiculite products, diatomite products, microporous calcium silicate, various mineral fiber products, and synthetic resin foam plastics. Introduce some foreign high-quality pipeline insulation materials, and carry out the research, development and improvement of new domestic products. For example, high temperature resistant rock wool, foam glass, etc. In addition to the use of dry, wet and surface coating, metal protective shells, aluminum foil, etc. have been gradually promoted. In recent years, with the development of the economy, the rapid development of my country's construction industry, and the continuous listing of new building materials have promoted the development of pipeline insulation materials, and my country's insulation technology and production capacity have been significantly improved.