1. During installation, first level the sand and soil and compact it with a flat vibrating tamper. The flatness, height, thickness, width and density of the sand cushion must meet the design requirements. Straight seam steel pipes can be released only after passing the inspection.
2. The straight-seam steel pipes and pipes used in tap water pipeline projects should comply with my country's current relevant product standards and design regulations, and have factory certificates to ensure that the materials do not pollute water quality.
3. Large diameter straight seam steel pipes should be hoisted using slings or special tools. During transportation, they should be filled in and tied tightly, and they should not collide with each other.
4. After checking the bottom of the tank, check the position of the pipe joints and pipe fittings, and then lower the straight seam steel pipe. When lowering the pipeline. In addition, a working pit should be dug at each joint and the size of the working pit should be suitable for convenient installation of the pipe joints.
5. When lowering the pipe, use two cranes to hang both ends of the steel pipe respectively, wrap the pipe body with high-strength nylon straps, and then slowly lower it into the foundation trench.
6. Cranes should be commanded by specially designated personnel. The lifting speed should be uniform, the rotation should be smooth, and the lowering speed should be low. The crane should not slow down or brake suddenly.
