Prefabricated directly buried hot water insulation pipe is widely used in liquid and gas transmission network, chemical pipeline insulation engineering petroleum, chemical, central heating network, air conditioning ventilation pipe, municipal engineering, etc. Prefabricated directly buried hot water insulation pipe is a kind of direct buried prefabricated insulation pipe with good insulation performance, reliability and low cost. The problems of heat preservation, sliding lubrication and waterproofing of bare pipe end of prefabricated directly buried heat preservation pipe used for high temperature heat transfer in large city central heating are effectively solved.
Prefabricated direct-buried hot water insulation pipe is also called prefabricated insulation pipe is divided into two kinds: plastic-lined steel insulation pipe and steel-lined steel insulation pipe, can be directly buried in 0.6-1.2 meters of frozen soil layer (so it is customary to call it direct-buried insulation pipe or prefabricated insulation pipe), prefabricated direct-buried insulation pipe with insulation, waterproof, anti-corrosion, heat insulation, sound insulation, resistance. Combustion, cold resistance, corrosion resistance, light capacity, high strength, simple and quick construction, heat loss than ordinary pipes can be reduced by more than 40%, service life than other insulation and anti-corrosion materials increased by 3-5 times, life can reach 30-50 years.
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