PVC pipe fittings manufacturers _ sea Widex (certified) _PVC fittings provided by Widex Qingdao Rubber Material Co. 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 identification method 1: Look at the surface finish, and whiteness. 2: Take a sample wrestling, easily broke calcium products generally are, of course, you have to comply with the requirements of the price is right, then it is possible. 3: Take samples side foot pipe, see if you can split PVC pipe manufacturers, or elongation at rupture after. (Usually you have to go to trial before a good set of PVC pipe fittings, ha ha, otherwise people can not let you step) 4: weather areas. The most direct way is to get a high place to put a few days 温高光 PVC pipe specifications, see the surface of the rate of change, but a waste of time. Mainly to see the front three like. Affects the quality of the pipe material and equipment and pipelines. These factors in both domestic and foreign manufacturers are the same. PVC composition structure qualities as a yellowish translucent and shiny. Transparency is better than polyethylene, polypropylene, polystyrene poor, with the aid amount, divided into soft and hard PVC, soft products soft and tough, feel sticky PVC pipe prices, hard-harder than low density products polyethylene, polypropylene lower than at the inflection point will appear bleaching phenomenon. Common products: plates, pipes, shoe soles, toys, doors, windows, wire jacket, stationery, packaging and so on.