PVC pipe connections are mainly gasket, bonding and flanged three kinds. Not less than 100 mm diameter pipes commonly used Aprons interface; pipeline diameter less than 100 mm of adhesive joints are commonly used PVC pipe supply heterosexual, and some loose-fitting. When crossing sewer pipes or other pipe PVC pipe opposite sex, usually using a metal pipe, then the plastic pipe with a metal pipe flange connection. Before and after the valve is connected to the pipe flange connection are also used. 1 when the small diameter pipe by solvent bonding, shall jack at the back of small rounded to form a groove, and to ensure smooth and perpendicular to the axis of the fracture heterosexual PVC pipe manufacturers, so as to bond securely to prevent leakage. 2 generally greater than or equal to 100 mm diameter PVC pipes are used apron interface. Must arrange the site before installing the tube socket chamfer, also check if the quality apron. You must wipe the mouthpiece rubber ring when installing clean. 3 trench excavation conventional pipe installation requires only able to 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 of the thermoplastic resin. Is a homopolymer of vinyl chloride. Homopolymers and copolymers of vinyl chloride system called vinyl chloride resin. PVC as a white amorphous powder, the degree of branching is small. Industrial production PVC molecular weight generally in the range of 50,000 to 120,000, with a polydispersity of greater molecular weight increases with lowering the polymerization temperature; no fixed melting point, 80 ~ 85 ℃ begins to soften, 130 ℃ into a viscoelastic state , 160 ~ 180 ℃ started to change as a viscous flow state; have better mechanical properties, tensile strength of about 60MPa PVC pipe opposite characteristics, the impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties. However, poor stability to light and heat, at or above 100 ℃ after prolonged exposure to sunlight, it will decompose to produce hydrogen and further autocatalytic decomposition, cause discoloration, physical and mechanical properties are rapidly decreased in practice must be added to stabilize agents to improve the stability to heat and light. Heterosexual PVC pipe fittings, PVC pipes heterosexual, 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!