Heating direct buried polyurethane insulation pipe, polyethylene direct buried insulation pipe manufacturer

Description :

　　Classification of direct buried polyurethane insulation pipes:

　　1. According to the temperature of the conveying medium, it can be divided into: normal temperature polyurethane direct buried insulation pipe, high temperature polyurethane direct buried insulation pipe, and deep cold polyurethane direct buried insulation pipe;

　　2. According to the different outer protective layers, it can be divided into: fiberglass outer protective layer polyurethane direct buried insulation pipe, high-density polyethylene outer protective layer polyurethane direct buried insulation pipe, steel outer protective layer polyurethane direct buried insulation pipe, and other outer protective layer direct buried insulation pipes;

　　3. There are many kinds of different transmission media: such as polyurethane prefabricated insulation pipe for water supply, high-temperature resistant polyurethane insulation pipe, directly buried polyurethane composite prefabricated insulation pipe for steam transmission, and buried rigid polyurethane foam plastic anti-corrosion insulation pipe for oil, etc. There are many other names such as polyurethane buried pipe, polyurethane prefabricated pipe, polyurethane direct buried prefabricated pipe, polyurethane jacket pipe, polyurethane foam insulation pipe, and so on.

　　The structure of polyurethane directly buried insulation pipe is divided into three layers from the inside to the outside: the inner layer is the working core pipe for conveying medium, and the core pipe is generally made of seamless pipe (GB8163-87), spiral welded pipe (GB9711-88; SY/T5038-92), straight seam welded pipe (GB3092-93), galvanized steel pipe and PPR, etc. According to different user requirements, the core pipe diameter is φ 22, 25, 32, 38, 45, 57, 76, 89, 108, 133, 159, 219, 273, 325, 377, 426, 478, 529, 630, 720, 820, 920, 1220, and the middle layer The material is polyurethane foam plastic or composite thermal insulation material, the thickness of the thermal insulation layer is 30-150mm, and the outer layer is high-density polyethylene jacket pipe, glass fiber reinforced plastic winding pipe and anti-corrosion steel pipe.

　　Polyurethane direct buried insulation pipes have excellent characteristics such as efficient insulation, waterproofing, anti-corrosion, thermal insulation, sound insulation, flame retardancy, cold resistance, anti-corrosion, light capacity, high strength, easy and fast construction, and are not afraid of plant roots. They have become an indispensable material for insulation, waterproofing, sealing and other industrial sectors such as construction, transportation, petroleum, chemical, power, refrigeration, etc. Polyurethane direct buried insulation pipes are used for insulation and cooling engineering of various indoor and outdoor pipelines, centralized heating pipelines, air conditioning pipelines, chemical and other industrial pipelines, oil pipeline engineering, steam and other pipeline engineering. Polyurethane direct buried insulation pipelines can reduce heat loss by more than 40% compared to ordinary pipelines in frozen soil layers of 0.6-1.2 meters. Their service life is more than 3-5 times longer than other insulation and anti-corrosion materials, and can reach 30-50 years.

　　Due to the polyurethane rigid foam insulation layer is closely bonded to the steel pipe skin, the polyurethane directly buried insulation pipe can isolate the infiltration of air and water and play a good anti-corrosion role. At the same time, its foam pores are all closed, and its water absorption is very low. The high-density polyethylene shell and fiberglass shell both 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. The reason of low water absorption is that the closed cell ratio of polyurethane foam is up to 92. Low thermal conductivity and low water absorption, combined with insulation layer and high-density polyethylene or fiberglass protective shell with good waterproof performance on the outside, have changed the traditional situation of "wet cotton jacket" for laying heating pipelines in underground trenches, reducing the overall heat loss of heating pipelines and reducing the heat loss of the heating network to 2. Polyurethane direct buried insulation pipes are suitable for insulation and cooling projects that transport various media within the range of -50150.

AfterSalesService :

• Polyurethane insulated pipeline