Qingdao heterosexual PVC pipe | Sea Widex (certified) | PVC pipe heterosexual Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is specialized in "PVC profiles, seals, ABS extruded profiles, PVC raw material" of the enterprise, the company adhering to the "honesty, hard service" concept, for You provide the highest quality products and services. Welcome to inquire! Contact: Zhao Shuang. PVC pipe connections are mainly gasket, bonding and flanged three kinds. Not less than 100 mm diameter pipes commonly used Aprons interface; less than 100 mm diameter pipes are commonly used adhesive joints, and some loose-fitting. When crossing sewer pipes or other pipes, metal pipes are normally used, 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 round PVC pipe prices heterosexual, to form a groove, and to ensure that the fracture is flat and vertical axis, 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 to the opposite sex when there is no loose pipes supply the original soil PVC, can not pressurized tamp pad. pvc material processing a pigment in certain metal ions will lead to a polyvinyl chloride resin thermal oxidative decomposition. Determination of the pigment is added to the polyethylene was heated at 180 ℃ the change of hue. Since the pigment contained in the metal ions to promote accelerated decomposition of PVC, resulting in change of hue. Meanwhile, note that the same is added lake red color can produce different PVC PVC straight pipe, such as those containing calcium, the color difference is small; manganese large difference between the color, which is due to the manganese, the metal promoter PVC dehydrochlorination cause. Sulfide colorants (such as cadmium red, yellow, etc.) used in PVC coloring, coloring agents may be due to the decomposition of hydrogen sulfide release. Such colorants should not be mixed with lead stabilizer to avoid generation of black lead sulfide. 2. Influence of Pigments on PVC insulation electrical cable materials as PVC and polyethylene as the electrical properties should be considered after coloring. Especially PVC insulation resistance than polyethylene its own poor, so the impact is even greater pigment. Instructions to select an inorganic pigment-colored PVC to its electrical insulation is better than that of organic pigments