Xingsong Industrial Prefabricated Directly Buried Polyurethane Insulated Steel Pipe Supports Customization with Adequate Supply

Description :

　　Product Details

　　Polyurethane insulation pipe, full name: high-density polyurethane foam prefabricated directly buried insulation pipe with plastic sheath, which is composed of working steel pipe, polyurethane insulation layer and plastic sheath pipe conveying medium, and is combined outward through equipment in turn. The working steel pipe layer generally uses seamless pipes (GB8163-87), spiral welded pipes (GB9711-88; SY/T5038-92), and straight seam welded pipes (GB3091-2008) according to the design and customer requirements. After advanced shot blasting and rust removal process, the rust removal grade of the steel pipe can reach Sa2 level in GB8923-1988 standard, and the surface roughness can reach R=12.5 microns in GB6060.5-88 standard. The second layer: polyurethane insulation layer, which is made by injecting the original liquid of rigid polyurethane foam into the cavity formed between the steel pipe and the outer protective layer with a high-pressure foaming machine. It is commonly known as "pipe in pipe foaming process". Its role is to waterproof, but insulation, and to support the weight of the heating network. When the temperature of the transmission medium is -50120, hard foam plastic is used as the insulation layer. The third layer: high-density polymer protective layer, prefabricated into a certain wall thickness of black (yellow) plastic pipe, which is used for standby after corona process treatment. Its role is to protect the polyurethane insulation layer from mechanical hard damage, and the second is anti-corrosion and waterproof. It is used for thermal insulation and cold insulation projects of various media transported within the range of -50150. It is widely used in urban central heating, heating rooms, cold storage, coal mines, oil ports, chemical industries and other thermal insulation projects. However, high-density polymer FRP has poor weather resistance and low heat resistance. High density polymer has a heat resistance of 6070, while fiberglass has a heat resistance of 100120 degrees Celsius. Therefore, it should be taken seriously in application. It is suitable for transporting steam or other media below 2.5MPa and 350 degrees Celsius. This product uses steel pipes as the outer protective layer, which has the advantages of high strength, not easy to damage, easy construction and maintenance, and long service life. Prefabricated polyurethane directly buried thermal insulation pipe can play a good anti-corrosion role because the polyurethane rigid foam thermal insulation layer is closely bonded to the steel pipe skin, which can isolate the infiltration of air and water. At the same time, its foam pores are all closed, and its water absorption is very low. Both high-density polymer shells and fiberglass shells have good anti-corrosion, insulation, and mechanical properties. Therefore, the outer skin of the working steel pipe is difficult to be eroded by external air and water. As long as the water quality inside the pipeline is well treated, according to foreign data, the service life of prefabricated polyurethane buried insulation pipes can reach more than 50 years, which is 34 times longer than the service life of traditional trench laying and overhead laying.

AfterSalesService :

• Prefabricated direct buried polyurethane insulated steel pipe