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涂塑钢管是国内近年来发展的一种新型管道材料 ,它以钢管为基体 ,在钢管表面上涂覆一层塑料膜。这层膜既可用液体塑料涂覆 ,也可用固体塑料涂覆 ,因而使产品既具有钢管的高强度和高刚度 ,又具有塑料的耐化学腐蚀性能。涂塑钢管表面光洁 ,在输送液体时阻力系数小 ,不混生细菌 ,有良好的防脂、防结垢能力 ,在一般情况下比用同直径的钢管输送的流体量大10 %～20 % ,输送动力消耗降低15 %以上 ,使用寿命延长10倍有余。因此可以说 ,涂塑钢管是高效节能又防腐蚀的新型管道材料。钢管涂塑技术在国外工业化国家已比较成熟 ,涂塑钢管已经广泛应用于石油、化工、建筑、造船、通讯、电力和地下输气管道等众多领域 ,如美国、日本等国的输水管路有80 %～90 %的管材采用涂塑钢管。而这项技术在我国仅是刚刚兴起 ,所生产的涂塑钢管尚属于初期阶段的产品 ,使用量也很小 ,但其潜在市场却很大。在石油输送管道中 ,即使采用高级合金钢或不锈钢钢管 ,其使用寿命和耐腐蚀性能也远比不上涂塑钢管 ;从海底抽吸锰矿石所用管道 ,采用涂塑钢管其使用寿命增加5倍多 ;原子能发电厂用涂塑钢管输送液体 ,不仅防腐能力强 ,使用寿命大幅度提高 ,而且可防止核辐射 ,增加核电厂的安全 ;其他诸如天然气管道、煤气管道等都因采用涂塑钢管而使
Plastic pipe is a new type of pipe material developed in recent years in China. It is based on steel pipe and coated with a plastic film on the pipe surface. This layer of film can be coated with liquid plastic, but also coated with solid plastic, so that the product has both steel high strength and high stiffness, but also has the chemical resistance of plastics. Plastic pipe surface smooth, the resistance coefficient in the transport of liquid small, non-mixed bacteria, good anti-fat, anti-fouling capacity, in general than with the same diameter steel pipe delivery volume 10% to 20% Transmission power consumption reduced by 15% or more, more than 10 times longer life. Therefore, it can be said that coated steel pipe is a new energy-saving and corrosion-resistant pipe material. Plastic pipe coating technology in foreign industrialized countries have been more mature, coated steel pipe has been widely used in petroleum, chemical, construction, shipbuilding, telecommunications, power and underground gas pipelines and many other fields, such as the United States, Japan and other countries of the water pipeline 80% to 90% of the pipe coated steel pipe. This technology is just emerging in our country, the production of plastic pipe is still an early stage of the product, the use of small, but its potential market is great. In the oil pipeline, even the use of high-alloy steel or stainless steel pipe, its service life and corrosion resistance is far less than the plastic pipe; pipe from the sea aspiration of manganese ore, the use of coated steel pipe life increased by 5 times Atomic power plants use plastic-coated steel pipe to transport liquid, which not only has strong anti-corrosion ability but also greatly improves service life. It also prevents nuclear radiation and increases the safety of nuclear power plants. Other such as natural gas pipelines and gas pipelines, Make