Insulation pipe, buried pipe insulation, pipe insulation black jacket black jacket spiral steel pipe include polyurethane insulation pipe, straight seam steel pipe and seamless steel pipe. Outer layer of black polyethylene material called black jacket insulation. With a high-pressure foaming machine cavity between the steel pipe and the outer sheath formed a one-time injection of rigid polyurethane foam liquid from prefabricated buried hot water pipe insulation, and then treated polyethylene pipe surface, forming the outermost protective layer layer. Prefabricated buried heating pipe insulation from the inside to the outside structure divided into three layers: the first layer: Working pipe layer depending on the design and customer requirements generally used seamless steel pipe, spiral pipe and straight pipe joints, ppr pipe, stainless steel pipe and other . 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 microns. Heat pipe insulation pipe manufacturers _ Kodak polyurethane insulation pipe (certified) _ insulation provided by Kodak Building Materials Co., Weifang. Weifang Kodak Building Materials Co. (www.wfkdjc.com) Shandong Weifang, the other leaders, over the years, the company is implementing 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 for Kodak.