PVC material is not easily flammable, high strength, resistance to climate variability and excellent geometric stability. PVC oxidant, reductant and acid has a very strong resistance. However, it can be concentrated oxidizing acids such as sulfuric acid, concentrated nitric acid corrosion and does not apply to contact with aromatic hydrocarbons, chlorinated hydrocarbons occasions. PVC melt temperature during processing is a very important process parameters plastic pvc pipe, if this argument would lead to inappropriate material decomposition problem. Very poor flow characteristics of PVC plastic pvc shaped pipe, the process is very narrow range. Especially high molecular weight PVC material more difficult to process (this material is usually added to improve the flow characteristics of lubricant), it is often used are low molecular weight PVC material. PVC contraction rate is very low price plastic pvc pipe, usually 0.2 to 0.6%. Long-term use temperature of most PVC products should not exceed 55 ℃ plastic pvc pipe manufacturers, 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 resin is a less stable polymer, will degrade under the action of light and heat, the process is hydrogen chloride evolution, structural changes occur, but the extent of relatively light. At the same time when a mechanical force, oxygen, odors, HCl and some of the active metal ions accelerate decomposition. Pvc plastic pipe fittings, sea Widex (certified), plastic pvc pipe 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.