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PVC pipe connections are mainly gasket, bonding and flanged three kinds. Greater than or equal to 100 mm diameter pipes commonly used Aprons interfaces; less than 100 mm diameter pipes are commonly used adhesive joints pvc pipe plant, and some loose-fitting. When crossing sewer pipes or other pipes, metal pipes are normally used, then the plastic pipe and metal pipe flange connection. Before and after the valve is connected to the pipe flange connection are also used. When a small-diameter pipeline by solvent bonding, shall socket at the back of small rounded to form a groove, and to ensure smooth and perpendicular to the axis of the fracture, so as to bond securely to prevent leakage. 2 generally greater than or equal to 100 mm diameter PVC pipes are used Aprons interfaces. Must arrange before installing the tube socket parts chamfering, also check if the quality apron. You must wipe socket, apron, etc. When installing clean. 3 traditional pipeline trench excavation requires only able to install the pipe into the trench and can be sealed can, in the absence of the original loose soil, compaction can not pressurized cushion. PVC, the abbreviation PVC (Polyvinyl chloride polymer = PVC molecular structure), is formed by the polymerization of vinyl chloride in the role of initiator thermoplastic resin. Is a homopolymer of vinyl chloride. Vinyl chloride homopolymers and copolymers of vinyl chloride resin system call. PVC amorphous structure of the white powder, the degree of branching is small. Industrial production of PVC molecular weight generally in the range of 50,000 to 120,000, having a large polydispersity, molecular weight increases with lowering the polymerization temperature; no fixed melting point, 80 ~ 85 ℃ begins to soften, 130 ℃ becomes viscoelastic state , 160 ~ 180 ℃ began to change for the viscous flow state; has good mechanical properties pvc pipe, tensile strength of about 60MPa, the impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties. However, poor stability to light and heat, at or above 100 ℃ by prolonged exposure to sunlight, it will decompose to generate hydrogen chloride, and further autocatalytic decomposition, cause discoloration, physical and mechanical properties is also decreased rapidly, in practice must be added to stabilize agents to improve the stability to heat and light. pvc crosslinking into radiation crosslinking and chemical crosslinking. 1. The radiation crosslinking. Use of high-energy rays, electron beams is generally cobalt 60 radiation source of rays and electron acceleration generated, but mainly the latter. Coupled to help crosslinking aid (two or more carbon-carbon double bond of a monomer structure) crosslinked. But the operation is difficult professional pvc pipe, high requirements for equipment. 2. Chemical crosslinking. Triazole-dimercapto-crosslinked amine salts, amine salts triazol-dimercapto-FSH, crosslinking mechanisms for combining an amine and a mercapto group to attack the carbon-chloro-polar bond implement substitution reaction. After the crosslinked product in UV resistant, solvent, temperature impact toughness, etc., have a comprehensive manner. And that device 1. solve the difficult problem of radiation crosslinking. 2. PVC toughening, weather pvc pipe supply, temperature, UV resistant and so performance has greatly improved. PVC 3. relieve radiation crosslinking or peroxide crosslinking degradation, discoloration overcome serious flaws. To obtain a better appearance and performance of products. 4. simple process, suitable for molding, coating, rotational molding and the like process. pvc tubes offer, 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!