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External protective layer: high density polyethylene external protective tube insulation layer: polyurethane rigid foam insulation layer work steel pipe: seamless steel tube.
The prefabricated directly buried insulation pipe can be directly buried in 0.6-1.2m frozen soil layer, the heat loss can be reduced by more than 40% compared with ordinary pipes, and the service life can be increased by more than 3-5 times compared with other heat insulation and anti-corrosion materials, and the service life can reach 30 years.
The seamless pipe PE external insulation polyurethane insulation pipe is made up of high density polyethylene outer pipe, polyurethane foam insulation layer and seamless steel pipe. Seamless steel pipe has hollow section, which is widely used to transport fluid, such as oil, natural gas, gas, water and some solid materials. The common pipe diameter of seamless pipe is dn25-dn600.
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