Prefabricated direct buried insulation pipe polyurethane foam insulation steel pipe manufacturer

Description :

　　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. 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.

　　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.

　　Polyurethane direct buried insulation pipes are made of high-density polyethylene material, which has strong waterproof and corrosion-resistant capabilities. Polyurethane direct buried insulation pipes do not require pipe trenches and can be directly buried underground or in water. The construction is simple and fast, and the overall cost is low. Made with various additives such as antioxidants, and strictly inspected for the quality of raw materials and products to ensure that the product quality meets the CJ/1142000 standard and the technical requirements for direct buried pipe outer protective pipes, improving the overall quality of the outer protective pipes. Polyurethane direct buried insulation pipe is a hard polyurethane insulation material with low thermal conductivity and good thermal insulation performance, which has excellent thermal insulation properties. The on-site joint insulation of polyurethane buried insulation pipes must be carried out after passing the pressure test. The on-site joint insulation construction is unique to the construction of polyurethane buried insulation pipes, and the quality of construction directly affects the service life. There are two methods for insulation layer: on-site foaming construction and insulation tile construction. Regardless of which method is used for construction, defects such as circular space, cracking, and delamination must not occur. There are various methods for protective layer (such as high-density polyethylene and fiberglass protective layer), but the integrity, tightness, and waterproofness of the joint must be ensured.

　　Polyurethane direct buried insulation pipe - advantages and characteristics

　　1. It has strong corrosion resistance and waterproof ability, and the overall cost is low

　　According to relevant departments' calculations, double pipe heating pipelines can generally reduce project costs by about 25% (using fiberglass as a protective layer) and 10% (using high-density polyethylene as a protective layer).

　　Low heat loss and energy conservation. The heat loss is only 25% of that of traditional pipes

　　Polyurethane insulation pipe with thermal conductivity and hydrophobicity of 0.03kg/cm3

　　3. Long service life

　　Proper installation and use can extend the lifespan of the pipeline network to 30-50 years, with low maintenance costs.

　　4. Less land occupation and faster construction are beneficial for environmental protection

　　Can reduce earthwork excavation by more than 50%, and reduce civil masonry and concrete volume by 90%

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