This production line is mainly used to produce PE spiral pipes which are largely used as protecting sleeves of optic or electric cable, and they are increasingly used in fields of electricity, telecom, post activities, constructions of express way, port, etc. These pipes are characterized by high intensity and tenancy, erosion resistance, constant shape and easy transportation and execution, etc. They can be processed and bent into long pipes with various radians. Owing to these advantages, they are very popular with clients engaged in many fields.