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 and miscellaneous soil piled separately hdpe tube grille, and clear the bottom of the loose soil and stones and other debris grid PVC pipe has a strong compatibility and usability It is suitable cable, cable grid tube map, coaxial cable, PCM cable release, and many other cable wear, PVC pipe grid square hole grid tube widely used in telecommunications, broadcasting, railway troops, institutions, medium-sized internal communications, industrial and mining raw materials used to use grid tube PE (polyethylene) as the main base material, PVC pipe grid square hole large temperature range. (+ 80 ° C - 40 ° C), PVC pipe grid has low resilience, compressive strength, impact resistance, and can be anti-acid, anti-aging. PVC pipes are mainly used for communications grid of fiber optic cable and cable protection cover, convenient construction. After hard work and development grill pipe prices for several years, our company has advanced a number of communication pipe production lines, to produce a variety of high quality pipes, mainly Plum | hdpe Plum | pvc pipe grill | five holes Plum | seven holes Plum and other products, sold in Beijing, Hebei, Shandong, Shanxi, Shaanxi, Inner Mongolia and other places. pvc pipe _ grill Thai Xiong Yu (certified) _ sunshine grill pipe provided by Xiong Yu Thai plastic products factory. Xiong Yu Tai Plastic Products Factory (www.taiyusuye.com) Hebei Baoding, UPVC pipe leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xiong Yu-tai in leadership with the staff warmly welcome all inquiries negotiations to create Xiong Yu-tai a better future.