China plastic pipe production capacity of 3 million tons pvc pipe plant, mainly PVC, PE and PP-R pipe three categories, including PVC pipe is the largest market share of plastic pipe, accounting for nearly 70 percent of the plastic pipe. PVC pipe production line of more than 1,600. Annual production capacity of 2.5 million tons, in 2003 PVC pipe (pipe fittings) annual production of more than 120 million tons. Plastic pipes, PVC's share of 70%, PE accounted for 25%, PP-R 4%, other 1%. Although the rapid development of PVC pipes attracts investment companies to enter the industry, but many manufacturers in domestic production (more than 2,000), the annual production capacity of 10,000 tons in just over 70, the annual output of 30,000 tons or more enterprises and has more than 20 industry 60% yield. 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 prices increase 20% pvc pipe than concrete pipes increased by 40%. 3. corrosion resistance, excellent chemical resistance: PVC-U pipe has excellent acid pvc pipe company, alkali, corrosion resistance, unaffected by moisture and soil pH of water, without any preservative treatment pipeline laying. 4. Has good water tightness: PVC-U pipes pvc pipe installation, regardless of the use of an adhesive or rubber ring is connected, 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 profile products experienced a period of rapid development and introduction period, from the time point of view, can be defined as the mid-1980s around -90 twentieth century and in 1995 - 2002. After 2003, PVC profile industry has entered a transition period. In the import of the product: Manufacturer common pursuit of low cost, simplified window profiles section, filled with a lot of calcium carbonate formulation, resulting in low performance, a lot of quality problems affecting the promotion of the product. 1995 began, a group of powerful enterprises began to digest and absorb foreign technology essence of European profile, developed their own windows and doors, plastic doors and windows become dominant, promoting technological upgrading and development of doors and windows, but the entire industry has been unprecedented development and growth. pvc pipe fittings _pvc _ 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!