Construction grille tube concrete steps simple seven-step summary, there are digging trenches → pipeline infrastructure pipelay installation → → → trench complex soil pipe connection cable → → wear on the specific site management and acceptance of each step below, for what it should be noted: grill pipe trench excavation should be noted: 1. width should be able to meet the pipe connection, foundation construction and backfilling required minimum interval. 2. General pipe trench excavation elevation above the substrate surface design 20-30mm undisturbed soil should be retained, the following shall be dug to the design elevation. If the local over-excavation, fill interchangeable 5-10mm diameter natural grade sand and gravel or sand and compacted. 3. trench excavation, the soil good place to be separated from the soil stack and miscellaneous communications grid tubes, and clear the bottom of the loose soil and stones and other debris. 3, the structure of innovation, saving tube position. Overall structure of the arc angle square grid tubes offer, arranged neatly convenience. Occupancy tube bit small, only 10% of cement pipe bit small amount of excavation, saving urban underground pipe-bit resource, less impact on road traffic and municipal. Grill pipe price | baodi grille tube | provided by Xiong Xiong Wong Tai Wang Thai Plastic Products Factory. Xiong Wang Thai Plastic Products Factory (www.wangtai668.com) strong, credible, in Baoding UPVC pipe industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Taihe Wang Xiong you hand into the brilliant, for a better future!