China plastic pipe industry in the development, some problems are increasingly apparent. Especially less variety of raw materials, the quality of instability, price volatility, lack of special plastic pvc pipe products, product quality can not be guaranteed, the product structure, production scale is unreasonable, the overall poor production equipment, product quality, management confusion, standard standardize, Atlas, quotas and other serious lag plastic pvc pipe characteristics, supporting poor, can not meet the development needs and the lack of practice tests and other factors severely restricted the further development and quality improvement industry. Therefore, China plastic pipe companies must seize new developments, attention production of raw materials, research and development, regulate industry positioning, improve the quality management measures to regulate the sales market, strengthen macro-control and guidance, develop, and improve the relevant standards and technical and economic policy pvc plastic pipe supply, strengthen cooperation and improve the sound of plastic piping systems, the only way to be invincible in the new situation. 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 process indicators, namely the decomposition temperature and heat stability. The so-called decomposition temperature is the temperature when large amount of hydrogen chloride release pvc plastic pipe, a 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 manufacturers, plastic pvc pipe, sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!