Plastic sleeve steel insulation steel pipe manufacturer - Guanghui Pipe Industry

Description :

　　Polyurethane insulation, also known as "jacket pipe", is composed of "two-step method", which is composed of high-density polyethylene outer protective layer, polyurethane rigid foam plastic pipe and steel pipe. The insulation layer is made of rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which can fully fill the gap between the steel pipe and the casing, and has a certain bonding strength, so that the steel pipe, the casing and the insulation layer form a solid whole. The polyurethane directly buried insulation pipe foam has good mechanical properties and thermal insulation properties. Generally, it can withstand the temperature of 120 and can withstand the temperature of 180 through modification or combination with other insulation materials.

　　Polyurethane jacket tube has become a relatively mature technology in some developed countries abroad. In the past decade, China's heating engineering technicians have been promoting the development of domestic pipeline laying technology to a higher level by digesting and absorbing this advanced technology. The practical achievements over the past decade have fully demonstrated that the polyurethane insulation buried pipe laying method has many advantages compared to traditional trench and overhead laying. The directly buried thermal insulation pipe is composed of steel pipe conveying medium, high-density polyethylene outer sleeve, and rigid polyurethane foam insulation layer between the steel pipe and the outer sleeve.

　　Advantages of jacket tube: (1) Low engineering cost. (2) Less land occupation, faster construction, and favorable environmental protection. (3) Jacket tubes save energy, resist corrosion, have good insulation performance, and have a long service life. (4) All are equipped with leakage alarm lines, all of which are complete. Once a leakage occurs in a certain part of the pipeline, the accurate location and degree of leakage of the insulation pipeline can be displayed on the dedicated detection instrument through the transmission of the alarm line, in order to notify the leak detection personnel to quickly deal with the leaking pipe section and ensure the full operation of the heating pipeline network.

　　Instructions for polyurethane prefabricated buried insulation pipe: A. The wall thickness of the pipe can be adjusted, and the wall thickness and color can be produced according to user requirements. Due to different wall thicknesses of the pipe, the insulation layer thickness is approximate and should be calculated based on the actual thickness. B. Complete sets of wooden supports, plastic plugs, flange plates at both ends, welding rods, welding guns, heat shrink tapes, etc. are provided to match the pipes. C. Pipes should not be exposed to sunlight, and outdoor storage should be covered with tarpaulins. The stacking area should be away from heat and fire sources. D. Avoid scratches during transportation and use.

　　Polyurethane prefabricated directly buried insulation pipe is a prefabricated pipe closely combined by steel pipe, polyurethane rigid foam insulation layer and glass avant-garde reinforced plastic (i.e. glass fiber reinforced plastic) outer sheath. Polyurethane insulation pipes have excellent characteristics such as light capacity, high strength, thermal insulation, sound insulation, flame retardancy, cold resistance, corrosion resistance, non water absorption, and easy and fast construction. They have become an indispensable material for insulation, waterproofing, sealing, and other industrial sectors such as construction, transportation, petroleum, chemical, power, and refrigeration. Polyurethane insulation pipes are used for insulation and cooling engineering of various indoor and outdoor pipelines, centralized heating, cooling, oil and gas pipelines, air conditioning pipelines, chemical, pharmaceutical and other industrial pipelines.

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