Spiral steel pipe is usually used in urban drainage pipelines. The use of spiral steel pipe in urban drainage pipeline systems is the comprehensive layout of urban water supply, water supply, water use, drainage, sewage treatment, and other pipeline systems and their various components within a certain period. The overall balance of urban water pipeline planning is very important, and various feasible water-saving and water-delivery schemes must be optimized and combined. To this end, we must first understand the urban water use plan, strengthen the special water use plan in the urban master plan, and formulate the urban water use plan by the concept of sustainable development of water. The content should include: surface water, groundwater, rainwater, and seawater, resource balance, water supply, drainage, and sewage reuse; water supply and water saving plan and sewage treatment and recycling plan; water ecological cycle planning; the scale and layout of various water supply and drainage pipeline engineering facilities.

For the common problems of uncoordinated planning, unmatched construction, and inconsistent management in the construction of urban water supply and drainage pipeline systems in my country, special attention should be paid to the coordinated development of pipeline matching and water supply and drainage. The processing capacity in the plan and the scale of the internal water supply pipeline system and its network facilities during the planning period should be detailed.

The design of spiral steel pipes in drainage pipes should meet the requirements of regional and urban master plans, and give full consideration to the scalability of the system. In the design, the convenience of water system maintenance and overhaul should also be considered, and the pipeline should be as short and efficient as possible.

A spiral steel pipe is a spiral steel pipe made of strip steel or coiled into a spiral shape, and both the internal and external seams are welded by double-sided submerged arc active welding. It can be widely used in the production of water, electricity, chemical industry, and other industries for the following reasons. It only needs to change the forming angle to produce steel pipes of various calibers with the same strip width, and it is easy to adjust.

Because it is formed by continuous zigzag, the length of the spiral steel pipe is not limited, and the length can be set at will. The spiral shape of the weld is evenly distributed on the circumference of the spiral steel pipe, so the spiral steel pipe has high dimensional accuracy and strength. It is easy to change the scale, suitable for small batch production and various types of spiral steel pipes.

Generally, the weld of the spiral steel pipe is longer than that of the straight seam steel pipe of the same standard, and the pressure borne by the spiral steel pipe is the same under the same standard wall thickness.

To adapt to modern production requirements, the production time of spiral steel pipes has become shorter and shorter, and the production price has become lower and lower, so spiral steel pipes have gradually replaced the use of channel steel.