Advantages pipe has good tensile, compressive strength: but its flexible than other plastic pipe. 2. The fluid resistance: PVC-U pipe wall is very smooth, fluid resistance of small chemical pvc pipe, its roughness coefficient of only 0.009, its water capacity than an equivalent diameter cast iron pipe increased by 20% over the concrete pipes increased by 40%. 3. corrosion resistance, excellent chemical resistance: PVC-U pipe has excellent acid, alkali, corrosion resistance, unaffected by moisture and soil pH of water, without any preservative treatment pipeline laying. 4. Good water tightness: Install PVC-U pipes, regardless of the use of an adhesive or rubber ring connection, have good water tightness. 5. Anti-gnawing: PVC-U pipe is not a nutrient source, and therefore will not be subject to rodent attack. According to the test proved that the US National Sanitation Foundation conducted in Michigan, rats gnawing not PVC-U pipes. 6, performance testing: Curing time shrinkage splitting tensile strength properties of the thermal stability of the peel strength of the storage period applicable to hazardous materials release hair. pvc pipe identification method 1: Look at the surface finish pvc pipe plant, and whiteness. 2: Take a sample wrestling, easily broke calcium product generally is, of course, you have to comply with the requirements of the price is right, then it is possible. 3: Take a sample with side foot pipe, see if you can crack or split after breaking elongation. (Generally you have to try to put a good set of lines, ha ha, otherwise people can not let you step on) 4: weather terms. 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 of the surface, but a waste of time. Mainly to see the former three like. Affect the quality of pipe materials and equipment and pipelines. These factors in the domestic and foreign manufacturers are the same. PVC very hard pvc pipe, the solubility is poor, only a small number of solvent dissolved in cyclohexanone, dichloroethane, and tetrahydrofuran and the like, organic and inorganic acids, bases, salts are stable, chemical stability with the use temperature increases. PVC dissolved in acetone - carbon disulfide or acetone - benzene in pvc pipe fittings, for dry or wet spinning from spinning fibers, polyvinyl chloride, said, with a flame retardant, acid, anti-microbial, wear green properties and has good warmth and flexibility. pvc pipe, pvc pipe, 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!