Buried Polyurethane Insulated Steel Pipe for Heating Insulation

Our produced products, including buried polyurethane insulated steel pipes for hot water steam transmission, high-temperature buried polyurethane insulated steel pipes, buried polyurethane insulated steel pipes, glass wool insulation boards, polyurethane insulated pipes, pre-fabricated buried insulated pipes, buried insulated pipes, wrapped glass fiber reinforced plastic insulated pipes, high-density polyethylene jacket insulated pipes, polyurethane insulated pipe shells, polyurethane jacket shells, buried steel polyurethane jacket insulated pipes, steel pipe polyurethane insulated pipes, and silicate-alumina insulated pipes, have all been recognized by the quality inspection authorities. These products help to reduce construction costs. According to relevant department estimates, dual-pipe heating pipelines can generally reduce construction costs by about 25% (using glass fiber as the protective layer) and 10% (using high-density polyethylene as the protective layer). They have low heat loss, saving energy. The thermal conductivity of the buried insulated pipes is: λ=0.013-0.03 kcal/m·h·°C, which is much lower than that of other commonly used pipeline insulation materials, improving the insulation effect by 4 to 9 times. Additionally, their water absorption rate is very low, approximately 0.2 kg/m2. The low water absorption rate is due to the closed-cell rate of polyurethane foam being around 92%. The low thermal conductivity and low water absorption rate, combined with the waterproof performance of high-density polyethylene or glass fiber reinforced plastic protective shells, change the traditional trench burial heating pipeline situation of "wearing wet cotton clothes," greatly reducing the overall heat loss of the heating pipeline, with the heat network loss being 2%, less than the standard requirement of 10%. The pre-fabricated buried insulated pipes adopt the buried heating pipeline technology, marking the entry of heating pipeline technology into a new starting point. With the decreasing energy resources and increasing demand, energy conservation, emission reduction, and environmental protection have become a global trend, and various localities are vigorously promoting the development, application, and industrialization of energy-saving, emission-reduction, and environmental protection products. Building industry polyurethane rigid foam insulation materials are an important branch of the polyurethane industry, characterized by multifunctionality, providing both insulation and waterproofing functions. Since their application in the building industry since the 1960s, these products have a history of 40 years, with some even being legislated as insulation and waterproofing materials for the building industry. In recent years, with the rapid development of China's building energy-saving market, polyurethane rigid foam insulation products have been widely used in the field of building insulation and waterproofing, becoming one of the leading thermal insulation and energy-saving products in the market.