High Temperature prefabricated buried pipe insulation pipe insulation is mainly composed of four parts. Steel (1) work: according to the medium technical requirements were adopted seam steel pipe, seamless, double-sided spiral submerged arc welded steel pipe. (2) Insulation layer: the rigid polyurethane foam plastic. (3) protective shell: the use of high-density polyethylene or fiberglass. Steel jacket pipe insulation manufacturers have a very simple question, but in simple cases still have to pay attention to the details of the problem to see what black polyethylene jacket pipe insulation, which for screening the product of great help black jacket insulation shell manufacturers, so there are now so many people are willing to see more information on the Internet to support their understanding. Under a wide range of age black jacket pipe insulation, steel jacket pipe insulation manufacturers are constantly walking towards the direction of diversification, and now many people are aware of the level of technology affect the quality of a manufacturer's product, so that the consumer those for technical aspects also need to have enough concern and attention.