PVC, the abbreviation PVC (Polyvinyl chloride polymer = PVC molecular structure) is formed by the polymerization of vinyl chloride in the role of initiator of the thermoplastic resin. Vinyl chloride homopolymer. Vinyl chloride homopolymers and copolymers of vinyl chloride resin system call. PVC is amorphous white powder, a small degree of branching. Industrial production of PVC molecular weight generally in the range of 50,000 to 120,000 pvc pipe, has a large polydispersity, molecular weight with lower polymerization temperature increases; no fixed melting point, 80 ~ 85 ℃ begins to soften, 130 ℃ becomes sticky elastic state, 160 ~ 180 ℃ began to change for the viscous flow state; have good mechanical properties, tensile strength of about 60MPa, the impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties. But for light and heat stability is poor, at above 100 ℃ or after prolonged exposure to sunlight, it will break down and produce hydrogen chloride, and further autocatalytic decomposition, causing discoloration, physical and mechanical properties also decreased rapidly pvc pipe fittings, in practical applications stabilizer must be added to improve heat and light stability. PVC rigid PVC and sheet adding stabilizers, lubricants and fillers, after mixing, extrusion using an extruder can be of various calibres, hard pipe, shaped tube, bellows, is used as the plumbing, water pipes, wires sleeve or stair handrail. Good hot rolled sheet will overlap, can be made of rigid plates of various thickness. Sheet can be cut into the desired shape of the five pvc pipe, and then use PVC welding with hot air welded into a variety of chemical corrosion-resistant tanks, ducts and vessels. Usually soft PVC products extruded by an extruder may hoses, cables, wires, etc.; use an injection molding machine with a variety of mold can be made of plastic sandals, shoes, slippers, toys, auto parts and so on. PVC is the growth rate of 4% to obtain production and application worldwide. PVC growth in Southeast Asia is particularly significant, thanks to the Southeast Asian countries have carried out urgent infrastructure needs. In the three-dimensional surface film can produce the material properties of the material ABS (acrylonitrile - butadiene - styrene) ABS is used to transport drinking water, mud and chemicals. The most common DWV (drain waste vent) applications. Unplasticized polyvinyl chloride (UPVC) and CPVC (post-chlorinated polyvinyl chloride) having an inner UPVC entire operating temperature range excellent chemical resistance, have a wide operating pressure belt. Due to the nature of long-term high strength, rigidity and cost-effective manufacturer of pvc pipe, UPVC systems account for a large proportion of plastic pipe installation. CPVC is resistant to many acids, alkalis, salts, paraffins, halogen and alcohols. This is not an anti-solvent, aromatic hydrocarbons and certain chlorinated hydrocarbons. PP (polypropylene) Polypropylene is suitable for use in food, drinking water and ultra-pure waters, as well as in the pharmaceutical, chemical and other industries. PE (polyethylene) Polyethylene has been used successfully for many years drinking water and waste water, hazardous waste, and the compressed gas is safely transported. pvc pipe manufacturers | sea Widex (Online) | pvc pipe provided by the Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is in Qingdao, Shandong, 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 the sea benefits of a better future.