Heating prefabricated buried pipe insulation from the inside to the outside structure divided into three layers: The first layer: Working pipe layer based on design and customer requirements are generally used seamless steel pipe, spiral pipe and straight pipe joints, ppr pipe, stainless steel pipe and other pipes . Advanced steel surface after shot blasting process, steel rust rating up to GB8923-1988 standard Sa2 grade, surface roughness up GB6060.5-88 standard R = 12.5 m. High temperature corrosion polyurethane insulation heating pipe, polyurethane foam pipe insulation Buried national standard engineering practices occurring in view of the problems of quality pipe insulation, should pay special attention to the following issues in the design and construction of: a, in the design and construction, we must To really understand the heating pipes Buried way divided into compensation and no compensation Buried Buried in two ways, really two ways to master their works steam pipe insulation, characteristics and applications in order to design Reasonable selection of high-density polyethylene pipe insulation on construction safety, reliable and economical. 1. We must first grasp the concept: there is compensation Buried way prefabricated buried pipe insulation, is by pipeline natural compensation and compensation (such as squares and bellows compensator) to solve the pipe heat elongation, so that the thermal stress to a minimum; No compensation Buried, simply put, is the pipeline without any compensation measures when heated, but by the strength of the pipe itself to absorb thermal stress. High-density polyethylene pipe insulation _ _ Kodak polyurethane foam pipe insulation pipe insulation provided by Kodak Building Materials Co., Weifang. Weifang Kodak Building Material Co., Ltd. (www.wfkdjc.com) Shandong Weifang, other leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Kodak leadership with the staff warmly welcome all inquiries negotiations to create a better future subjects.