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                                                                                Cangzhou Spiral Steel Pipes Group Co.,Ltd.

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                                                                                Prefabricated polyurethane buried insulation pipe
                                                                                Release date:2016-11-02


                                                                                Prefabricated polyurethane buried insulation pipe
                                                                                 
                                                                                details
                                                                                 Prefabricated polyurethane direct buried pipe insulation is a good performance, plus safe, reliable, low cost of direct buried prefabricated insulation pipe. Effective solution to the city of central heating in the 130 ℃ -600 ℃ high temperature prefabricated prefabricated polyurethane heat pipe insulation, sliding lubrication and bare water-side problem. Prefabricated polyurethane direct buried pipe insulation using direct buried heating technology, marking the technical development of China's heating pipe has entered a new starting point.
                                                                                 
                                                                                  Composition of Prefabricated Polyurethane Directly Buried
                                                                                 
                                                                                 The prefabricated polyurethane direct buried thermal insulation pipe is composed of a steel pipe, a glass steel inner sheath and a glass steel shell, and is characterized by further comprising a high-temperature heat insulation layer, a lubrication layer and a elastic seal.
                                                                                 
                                                                                1, the work of steel: According to the technical requirements of the transmission medium were used seam steel pipe, seamless steel pipe, double submerged arc spiral welded steel pipe.
                                                                                 
                                                                                2, insulation layer: the use of rigid polyurethane foam.
                                                                                 
                                                                                3, protective shell: the use of high-density polyethylene or glass fiber reinforced plastic.
                                                                                 
                                                                                4, the leakage alarm line: the manufacture of high-temperature prefabricated pipe insulation, the insulation layer near the pipe, buried alarm line, once a leak somewhere in the pipeline, through the alarm line conduction, can be dedicated detection instruments Alarm and show the exact location of leakage and the extent of leakage in order to inform the maintenance staff to quickly handle the leakage of the pipe to ensure safe operation of the heating network.
                                                                                 
                                                                                 Advantages of prefabricated polyurethane direct - buried thermal insulation
                                                                                 
                                                                                1, small footprint, fast construction, enabling environmental protection.
                                                                                 
                                                                                Prefabricated directly buried steel pipe insulation does not need to build a huge, just buried underground pipe insulation, thus greatly reducing the project area, reduce earth excavation of about 50% or more, to reduce the civil masonry and concrete 90%. At the same time, the insulation pipe processing and on-site trenching parallel, just on-site joints, can shorten the duration of about 50% or more.
                                                                                 
                                                                                2, anti-corrosion, insulation performance, long service life.
                                                                                 
                                                                                 Prefabricated polyurethane buried pipe insulation pipe insulation, isolated from the air and water infiltration, can play a good anti-corrosion effect. While its foam holes are closed, water absorption is very small. High-density polyethylene shell, glass fiber reinforced plastic shell has good corrosion resistance, insulation and mechanical properties. Therefore, the working steel skin is difficult to be outside the erosion of air and water. As long as the pipeline internal water quality, according to foreign information, high temperature prefabricated buried insulation pipe service life of up to 50 years, than the traditional trench laying, overhead laying life 3 to 4 times higher.
                                                                                 
                                                                                3, reduce the project cost.
                                                                                 
                                                                                According to the calculation of the relevant departments, dual-pipe heating pipe, under normal circumstances can reduce the project cost of 25% (using glass fiber reinforced protective layer) and 10% (using high-density polyethylene to do the protective layer).
                                                                                 
                                                                                4, high safety performance.
                                                                                 
                                                                                In addition to China's production of prefabricated polyurethane buried insulation pipe, are equipped with leakage alarm line, once a leak somewhere in the pipeline, through the alarm line conduction, can be displayed on the special instrument insulation pipe insulation, water leakage accuracy Location and degree of leakage in order to inform the seepage personnel to quickly handle the leakage of the pipe, to ensure the safe operation of heating pipe network.
                                                                                 
                                                                                In general, the prefabricated polyurethane direct buried pipe not only has the traditional trench and overhead piping difficult to match the advanced technology, practical performance, but also has significant social and economic benefits, but also an effective measure for heating energy. Directly buried heating pipe technology, marking the technical development of China's heating pipe has entered a new starting point. With the further improvement of the advanced technology and development of heating pipes buried directly replace the trench and overhead is imperative.
                                                                                 
                                                                                 Prefabricated Polyurethane Directly Buried Thermal Insulation
                                                                                 
                                                                                 Prefabricated polyurethane direct buried insulation pipe is widely used in liquid, gas pipeline network, chemical pipeline insulation engineering petroleum, chemical industry, central heating network, central air conditioning ducts, municipal engineering.

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