Different plastics and traditional materials, faster pace of technological progress, the emergence of new technologies, new materials, new technology to make the advantages of plastic pipe relative to traditional materials and more prominent. Compared with traditional plastic pipe metal pipe and cement pipes, light weight, typically only a metal pipe 1 / 6-1 / 10, has good corrosion resistance, impact resistance and tensile strength than the inner surface of the plastic tube cast iron pipe is smooth and more, low coefficient of friction, fluid resistance, can reduce water consumption more than 5% PVC plastic prices, good comprehensive energy, manufacturing 75% lower energy consumption right, easy to transport, easy to install, service life of up to 30 -50 years. Polyethylene pipe has developed rapidly in the world supply of PVC plastic, polyethylene developed applications in the field of water supply pipes and gas fields accounted for an absolute advantage. Polyethylene pipes not only a lot to replace traditional steel, cast iron pipe, etc., are still in place of PVC pipe, polyethylene pipe reason is technological innovation. On the one hand there is a significant improvement materials, polyethylene polymerization by improving the production process, the strength polyethylene pipe resin almost 1-fold increase. On the other hand there is a new application of technology development, such as PVC plastic pipe trench excavation without fittings, directional drilling method using polyethylene pipe laying technology into full play the advantages of polyethylene pipe, the traditional pipe in using this method is suitable The situation did not competitive. There are a lot of new materials, new techniques are being investigated or have been finding out is to try to test to be sure, in the next 10 years of technological progress plastic pipe plastic pipe will lead to more quickly develop broader. Softening point close to the decomposition temperature of the polyvinyl chloride resin. It has begun to decompose at 140 ℃, the decomposition at 170 ℃ when more quickly. In order to ensure the normal molding process, PVC resin provides for the two most important indicators of PVC plastic process, namely the decomposition temperature and heat stability. The so-called decomposition temperature is the temperature when a large number of release hydrogen chloride, the so-called heat stability is at a certain temperature conditions (typically 190 ℃) is not a lot of time to release hydrogen chloride. PVC prolonged exposure to 100 ℃, unless adding a basic stabilizer, or will decompose, if it exceeds 180 ℃ the rapid decomposition. Long-term use temperature of most PVC products should not exceed 55 ℃, but specially formulated PVC for long-term use temperature up to 90 ℃. Soft PVC products will harden at low temperatures. PVC because it contains chlorine atoms in the molecule, so it and its copolymers generally fire flame resistant, self-extinguishing, non-drip. PVC plastic pipe fittings, sea Widex (certified), PVC plastic provided by Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is Qingdao, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Widex leadership in the sea with the staff warmly welcome all inquiries negotiations to create sea Widex a better future.