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 is small, its roughness coefficient of only 0.009, its water capacity than an equivalent diameter cast iron pipe increased by 20%, increased more than 40 concrete pipe %. 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 light, heat stability is poor. Softening point of 80 ℃, begin to decompose at 130 ℃. Without heat stabilizer, i.e., polyvinyl chloride begins to decompose at 100 ℃ pvc pipe, faster decomposition above 130 ℃. Thermal decomposition of the release of hydrogen chloride gas (hydrogen chloride gas is a toxic gas) to make it change color, from white to pale yellow → red → → → dark brown. The sun's ultraviolet light and oxygen causes oxidation and decomposition of PVC occur, thus making PVC flexible pvc pipe fell, and finally brittle. From here, pvc pipe fittings understandable why some PVC plastic over time will turn yellow, brittle reasons. Having stable physicochemical properties, insoluble in water, alcohol, gasoline, gas, vapor leakage low; at room temperature can be resistant to any concentration of hydrochloric acid, sulfuric acid 90% or less, 50-60% nitric acid and 20% or less caustic soda solution, has a certain resistance to chemical corrosion; for salts quite stable, but can be dissolved in ether, ketones, chlorinated aliphatic and aromatic hydrocarbons and other organic solvents. 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 is small, its roughness coefficient of only 0.009, its water capacity than an equivalent diameter cast iron pipe increased by 20%, increased more than 40 concrete pipe %. 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 plant, sea Widex (certified), pvc pipe provided by Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is Qingdao, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Widex leadership in the sea with the staff warmly welcome all inquiries negotiations to create sea Widex a better future.