Supply of directly buried polyurethane prefabricated insulation pipe [recent price]

The company has advanced equipment and strong technical force, specializing in the production of prefabricated direct burial Insulated pipeline Products whose products are worked by Steel pipe , hard polyurethane Foamed insulation layer, high-density polymer ethylene Protective layer (or Glass Steel protective layer). From the aspects of energy saving, cost reduction, construction period shortening and environmental protection, the prefabricated directly buried insulation pipe not only has the incomparable technical and practical performance of traditional trench and overhead pipeline laying, but also has significant social and economic benefits.

Prefabricated directly buried insulation pipes can be divided into normal temperature polyurethane directly buried insulation pipes, high temperature polyurethane directly buried insulation pipes, and cryogenic polyurethane directly buried insulation pipes according to the temperature of the transmission medium; 　

2. According to the difference of the outer protective layer, it can be divided into: glass fiber reinforced plastic outer protective layer polyurethane prefabricated directly buried insulation pipe, high-density polyethylene outer protective layer polyurethane prefabricated directly buried insulation pipe, steel outer protective layer polyurethane prefabricated directly buried insulation pipe and other outer protective layer prefabricated directly buried insulation pipe; 　

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

Construction characteristics Manufacturer's guide price of prefabricated polyurethane insulation directly buried pipe in Daxing District 1. Reduce the project cost. According to the estimation of relevant departments, the double pipe heating pipeline can generally reduce the project cost by about 25% (using glass fiber reinforced plastic as the protective layer) and 10% (using high-density polyethylene as the protective layer).

2. Low heat loss and energy saving. The thermal conductivity of high-temperature prefabricated directly buried insulation pipe is λ=0.013-0.03kcalm · h · oC, which is much lower than other commonly used pipeline insulation materials in the past, and the insulation effect is improved by 4~9 times. Moreover, its water absorption is very low, about 0.2 kgm2. The reason of low water absorption is that the closed cell rate of polyurethane foam is up to 92%. The low thermal conductivity and low water absorption, together with the insulation layer and the high density polyethylene or glass fiber reinforced plastic protective shell with good waterproof performance outside, have changed the situation of traditional trench laying of heat supply pipes "wearing wet cotton padded jacket", greatly reducing the overall heat loss of heat supply pipes. The heat loss of the heat network is 2%, less than the standard requirement of all 10%.

3. Anticorrosion, good insulation performance and long service life. High temperature prefabricated directly buried insulation pipe can play a good anti-corrosion role because the polyurethane insulation layer is closely bonded to the steel pipe skin, which can isolate the infiltration of air and water. At the same time, its foam pores are closed, and its water absorption is very small. High density polyethylene shell and glass fiber reinforced plastic shell have good anti-corrosion, insulation and mechanical properties. Therefore, the outer skin of working steel pipe is difficult to be eroded by external air and water. As long as the water quality inside the pipeline is well treated, according to foreign data, the service life of high-temperature prefabricated directly buried insulation pipe can reach more than 50 years, which is 3~4 times longer than that of traditional trench laying and overhead laying.

4. Small land occupation, fast construction and favorable environmental protection

Since the polyurethane synthetic material was born in the 1930s, the product has been developed rapidly as an excellent thermal insulation material, and its application scope is also increasingly wide. Because of its simple construction, significant energy-saving and anti-corrosion effects, it is widely used in various heat supply, refrigeration, oil transmission, steam transmission and other pipelines. It is widely used in various heating, cooling, oil and steam pipelines, indoor and outdoor pipelines, and centralized heating pipelines,