PVC pipe manufacturers _PVC pipe _ sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is specialized in "PVC profiles, seals, ABS extrusion profiles, PVC raw material" of the enterprise, the company of "honesty, hard service" concept, for You provide the most quality products and services. Welcome to inquire! Contact: Zhao Shuang. PVC early in 1835 to the United States V. Le Niao found to yield a white solid PVC pipe manufacturers use when sunlight chloride, namely PVC. PVC in the 19th century was found twice the price of PVC pipe, once Henri Victor Regnault in 1835 PVC pipe fittings, another is Eugen Baumann found in 1872. Two opportunities, this polymer appear in is placed in the sun too vinyl chloride beaker, to a white solid. PVC pipe in the early 20th century, the Russian chemist Ivan Ostromislensky and Germany Griesheim-Elektron chemist Fritz Klatte Also, try PVC used for commercial purposes, but the difficulty is how to process this kind of hard, sometimes brittle polymer of. pvc Features 1. amorphous material, moisture absorption, poor mobility, in order to improve mobility, prevent air bubbles, should advance to dry. 2. easy to decompose, especially at elevated temperatures in contact with steel, copper easier decomposition (decomposition temperature of 200 degrees). Forming small temperature range, the material temperature must be strictly controlled. 3. When using screw injection machine and straight nozzle aperture should be large, to prevent stagnation dead material. 4. Die casting system should be thick, the gate should be large cross-section, the mold should be cooled, the mold temperature 30-60 degrees, the material temperature 160-190.