During the forming process, the steel plate deforms evenly, the remaining stress is small, and the skin phase is not scratched. The processed spiral steel pipe has greater flexibility in the size and specification of the diameter and wall thickness, especially in the production of high-grade steel-grade thick-walled pipes, especially the small and medium-diameter thick-walled pipes have disadvantages that cannot be compared with other processes. To meet users' more requirements in terms of spiral steel pipe specifications.