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发表于 2008-12-26 18:50:54
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With the accelerated process of urbanization in China, in the face of population, resources and the environment pressure, in order to ensure the sustainable development of the national economy, China's government to increase year by year on urban infrastructure investment, pipeline construction and the municipal building into a fairly Large pipe in order to continuously enrich the varieties and specifications, production increased continuously improve the quality and performance of the new type of pipe continuing mushrooming.
Galvanized steel pipe with its good strength, stiffness and impact, a certain temperature, pressure capability, moderate prices, easy access to raw materials and easy processing, and therefore in the municipal water supply and drainage engineering and construction side has been widely used. However, galvanized steel pipes in use because of their easy to corrosion, rust, scale, thereby causing serious water quality of secondary pollution, so that the deterioration of water quality, on the other hand, as a result of corrosion damage to the leakage of customers living and working environment, And lead to a huge waste of water resources, which urgently requires a new type of green environment-friendly alternative products. At the same time, galvanized steel pipe to spend a lot of steel, waste a great deal of energy into the end of the 1990s, the Ministry of Construction and determined to promote plastic composite pipe.
In the organic industry promotion, in support of state policies, it ushered in Pipes full of vigor and vitality of the replacement era, a large number of new plastic pipe and composite pipe emerged one after another. One of the main plastic pipe: Hard polyvinyl chloride (UPVC), cross-linked polyethylene pipe (PEX), polyethylene pipe (PP-R, PP-C), high-density polyethylene pipe (HDPE), poly-chlorinated poly Vinyl tube (CPVC), and so on. There are aluminum-plastic composite pipe composite pipe, plastic pipe, steel-plastic composite pipe, copper pipe, and other complex plastic.
New pipe and tube, compared with the traditional good performance in today's construction and municipal water supply and drainage project has played a huge role, but they also have much room for improvement, which we need to further improve their performance, constantly developing new products, so that Pipe new and better services for our socialist construction. |
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发表于 2003-8-19 16:23:02