Shandong PVC pipe, sea Widex (certified), PVC pipes provided by Qingdao Rubber Material Co., Ltd. Widex. 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. Advantages pipe has good tensile, compressive strength: but its flexible than other plastic pipe. 2. Fluid resistance: PVC-U pipe wall is very smooth, fluid resistance is small, its roughness coefficient of only 0.009, its water capacity than the equivalent diameter cast iron pipe increased by 20 percent, more than 40 concrete pipe %. 3. corrosion resistance, excellent chemical resistance: PVC-U pipe has excellent acid, alkali, corrosion resistance, unaffected by moisture moisture and soil pH, without any preservative treatment pipeline laying. 4. have good water tightness: Install PVC pipe PVC-U pipe price, regardless of the use of an adhesive or rubber rings connected, have good water tightness. 5. Anti-gnawing: PVC-U pipe is not a nutrient source, and therefore not subject to rodent attack. According to the test proved that the US National Sanitation Foundation conducted in Michigan, the mice will not gnawing PVC-U pipes. 6. Performance Testing: curing time shrinkage splitting strength peel strength tensile properties of the thermal stability of the applicable hazardous substance release fat storage period. PVC light, heat stability is poor. A softening point of 80 ℃, begin to decompose at 130 ℃. In the case of a stabilizer without heating, i.e., polyvinyl chloride begins to decompose at 100 ℃ PVC pipe fittings, 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 → → brown → black. The sun's ultraviolet light and oxygen cause oxidative decomposition of polyvinyl chloride occurs, thus making flexible PVC decline, and finally brittle. From here, the manufacturers of PVC pipe is easy to understand why some PVC plastics over time will turn yellow, brittle reasons. Has stable physical and chemical properties, is not soluble 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 chemical resistance; of salts is quite stable, but can be dissolved in ether, ketones, chlorinated aliphatic and aromatic hydrocarbons and other organic solvents.