Widex Sea (Figure) _PVC pipe _PVC tube provided by Widex Qingdao Rubber Material Co. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is a professional "PVC profiles, seals, ABS extruded profiles, PVC materials," the company. Since its inception, we adhere to the "honesty, sound management" approach, the courage to participate in healthy competition in the market, so that the "sea Widex, Widex Rubber Sea, Qingdao Hui Da" brand has a good reputation. We adhere to the "service first, customers first" principle, so that the sea Widex has won the trust of customers congregation in industrial products, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! There are more than the number of production companies (nearly 400), yields a miscarriage can be large (2.8 million tons), small demand (2003 sales of 1.2 million tons the country profiles), production can not take full advantage of the current situation within the industry PVC profile industry PVC pipe contradictory quotes, with an annual output more than 20,000 tons less than 10 companies, uneven level of product quality, inferior products still have a market, industry quality technical standards too low, is not conducive to technological progress, leading to substitute aluminum comeback. The high-end market (30%) were occupied by foreign brands, middle and low market unprofitable, intense competition, the final structure has not yet formed. From the factory distribution, in 392 sections of PVC pipe equipment manufacturers in the Southeast 37 percent, Shandong 12%, 17% in the central region, the Northeast 19%, 15% in the western region. From the production point of view 2003 National Division capacity 2.8 million tons of PVC pipe, 9% in Shandong Province in the central region of 1%, the Northeast 32 percent, 7 percent in the western region, the southeast region of 39%. Hard PVC pipe has a nominal diameter of 50CM, but soft PVC pipe is generally the largest of 50mm. pvc pipe fittings rigid PVC pipe specifications: GB / T13020-1991 soft PVC pipe specifications: GB / T13527.1-1992 hard PVC pipe has a nominal diameter has :( units mm) 2.5,3,4,5,6, .. ... 355,400,450,500,560,630,710,800,900,1000 and other PVC-U and the difference between UPVC and UPVC PVC-U is, we usually say that PVC pipe, but the wording is just not the same sequence . PVC production process, in order to increase the performance of PVC plastics, increase productivity, added plasticizers (such as DOP PVC pipe specifications, DBP, DINP, etc.), and add the plasticizer in PVC products will be relatively soft. Generally, we will not be added during processing plasticizer of PVC products collectively known as UPVC, also writing PVC-U.