Spiral steel pipes can serve as the base pipe for many types of steel pipes, and for each type of steel pipe, the usage areas of spiral steel pipes are differentiated. Firstly, ordinary spiral steel pipes are mainly used for water supply pipelines, sewage transportation pipelines, bridge support, or well driving and pile driving. The second type is coated spiral steel pipe, which has many uses. For example, plastic coated spiral steel pipes are used for water supply and sewage treatment in water supply and drainage;