Familiar with design drawings, data and figure out piping layout and the branch pipe, and process and construction to installation requirements. Familiar scene, understand the design pipeline along existing plane and elevation control point distribution. According to the existing pipeline plane and control point of carbon bellows, combined with the actual terrain, good measurement data processing, draw sketches found. After entering the construction unit of the standard point and wire transfer point retest, closed after the poor meet the design requirements for wire points, encryption standard point, within every 60 meters have a standard point pvc bellows, encrypted point must be closing adjustment, the standard point of closure difference 20√L, ensure accurate encrypted point to meet drain elevation, linear control accuracy. Because the pipeline construction in the middle pile to be dug, and therefore not subject to the interference construction, Surveying convenient and easy place to protect workers control piles measurement facilities, survey and design center line direction control pile, extension cords or wires law, survey and design subsidiary pile position control structures using parallel line intersection method or methods. The construction process is the bottom elevation measurement primarily determined after mechanical excavation, using measurements with the machine, with the cut-and-test, put an end to the phenomenon of over-excavation, the bottom elevation to ensure compliance with the design requirements, after pipeline installation prestressed plastic bellows, retest bellows, identify problems in time, the tube bottom elevation within the permissible deviation range. Measured daily before work begins, the standard of review should be carried out adjacent measurements. * Digital line centralized control · Dual coextrusion, double shunt * Full vacuum feed belt cover · Random flaring forming characteristics of HDPE double wall corrugated pipe has excellent chemical stability, anti-aging and environmental stress cracking resistance performance . Raw materials for its production out of HDPE double wall corrugated pipe belonging to a flexible tube. hdpe double wall corrugated pipe, Xiong Yu-tai (certification), the bellows by Xiong Yu-tai plastic factory. Xiongxian-Thai plastic products factory (www.taiyusuye.com) Hebei Baoding, UPVC pipe leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Xiongxian Thai-leadership with the staff warmly welcome all inquiries negotiations to create Xiongxian Thai-better future.