Prefabricated direct buried insulation pipe polyurethane direct buried insulation pipe manufacturer direct sales to Cangzhou Guanghui Pipe Industry

Description :

　　Polyurethane direct buried insulation pipe is divided into three layers from inside to outside:

　　Layer: The working steel pipe layer generally uses seamless pipes (GB8163-2008), spiral welded pipes (SY/T5037-2000), and straight seam welded pipes (GB/T3091-2008) according to the design and customer requirements. After advanced rust removal process, the rust removal grade of the steel pipe can reach Sa2.5 level in GB8923-1988 standard, and the surface roughness can reach R=12.5 microns in GB6060.5-88 standard.

　　The second layer: the polyurethane insulation layer 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 at one time. It is commonly known as the "pipe in pipe foaming process". Its functions include waterproofing, insulation, and supporting the self weight of the heating network. When the temperature of the conveying medium is -50

　　-At 120, rigid polyurea foam plastic is selected as the thermal insulation layer.

　　The third layer: The high-density polyethylene protective layer is prefabricated into black (yellow) plastic pipes with a certain wall thickness, which serves to protect the polyurethane insulation layer from mechanical damage and prevent corrosion and waterproofing.

　　Polyurethane direct buried insulation pipes have significant insulation and sealing effects when used in heating (cooling) projects. When buried underground, they not only save energy and reduce waste, but also beautify the environment without occupying land. When used in oil and gas transportation, it can meet long-distance transportation requirements, eliminate operation and maintenance, meet insulation and antifreeze requirements to the fullest extent, reduce heating equipment, and is particularly convenient to install, shortening the construction period. When used for geothermal and hot spring transportation, it meets the cooling requirements and achieves long-distance transportation. Used in water conservancy and mining to meet their requirements for cold and anti freezing, insulation and anti-corrosion. In addition, there is also a vast space for use in the pipeline transportation of chemical materials.

AfterSalesService :

• Prefabricated buried insulation pipe