: With the continuous development of urban construction Chongqing cpvc power management, power grid overhead laying traditional way do not meet the requirements of modern cities, local public works department are doing, "the cable into the ground," the renovation project. The traditional use of Buried Power Protection tube (exhaust tube) commonly used asbestos cement pipes, excavation area must be large and long road closure Tangshan cpvc power tube when buried, has caused great inconvenience to the city traffic. In this case, Shandong cpvc power tube without reinforced plastic pipe sprung up everywhere. Since China buried high-voltage power cable chlorinated polyvinyl chloride (CPVC) sheathing industry standards performed QB / T2479-2000 cpvc can not meet the actual needs of power management, the new standard QB / T2479-200X forthcoming. The new standards proposed new casing Dimensions and tolerances, eliminating the negative deviation of wall thickness, length allowed negative bias; provide for the establishment of two wall thickness in most cases, the thin-walled tubes and thick-walled tubes cpvc power management specification Model _cpvc power tube _ Xiongxian Xiongxian Thailand by Thai-yu plastic products factory. Xiongxian-Thai plastic products factory (www.taiyusuye.com) strong, credible, in Baoding UPVC pipe industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Xiongxian innovative ideas will lead Thailand into the brilliant buildings and you work for a better future!