pvc pipe identification method 1: Look at the surface finish of PVC pipe, and whiteness. 2: Take a sample wrestling PVC pipe fittings supply, 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 pieces of equipment, or elongation at rupture after. (Usually you have to go try to set a good line, ha ha, otherwise people can not let you step) 4: weather areas. The most direct way is to get a high 温高光 place to put a few days to see if the rate of change in the surface, 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 rigid PVC sheet and plate by adding stabilizers, lubricants and fillers PVC pipe fittings, after mixing, can be extruded with an extruder of various calibres hard tube, shaped tubes, bellows, is used under the water, drinking water pipe, wire casing or stair railing. Good hot rolled sheet will overlap, can be made of rigid plates of various thickness. Sheet can be cut into the desired shape, and then use PVC welding with hot air welded into a variety of chemical resistant tanks, ducts and vessels. Generally soft PVC products can be extruded by an extruder hoses, cables, wires, etc; the use of an injection molding machine with a variety of molds can be made of plastic sandals, shoes, slippers, toys, automotive accessories. Qingdao PVC pipe fittings | PVC pipe fittings | 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!