Beijing heating pipes buried spiral steel pipe manufacturers of polyurethane foam insulation

 Polyurethane pipe insulation Advantages: 1, lower project cost, according to an estimate, polyurethane pipe insulation under normal circumstances can be reduced to 25% of project cost (using fiberglass to make a protective layer) and 10% (high-density polyethylene as a protective layer) around 2, low heat loss, energy conservation, polyurethane thermal conductivity: λ = 0.013-0.03kcal / m · h · oC, much lower than other pipe insulation material used in the past, the insulation effect increased by 4 to 9 times. Further water absorption is very low, because of low water absorption of about 0.2kg / m2. Because of the polyurethane foam is closed cell ratio as high as 92%. low thermal conductivity and low water absorption, together with the insulation layer and outer waterproof Good high-density polyethylene or fiberglass protective shell, has changed the traditional trench laying heating pipes status "wearing wet jacket", greatly reducing the overall heat loss heat pipes, thermal heat loss net of 2%, far less than the international 10% of the standards. 3, anti-corrosion, good insulation properties, long service life due to the polyurethane rigid foam insulation layer tightly bonded to steel skin, cut off from the air and water infiltration, can play a good anti-corrosion effect. At the same time Its foaming holes are closed, water absorption is very small high-density polyethylene shell, fiberglass shell have good anti-corrosion, insulation and mechanical properties. Therefore, the work is hard steel jacket by outside air and water erosion. As long as Water pipes inside handle, according to foreign materials, the service life of up to 50 years, compared with the traditional trench laying, laying of overhead high life of 3 to 4 times