This double wall corrugated pipe making machine equipped with double layer spiral structure extrusion die head. Forming machine adopts vacuum forming type. This production line can produce PP,PE etc material small diameter double wall corrugated pipe continuously and stably. Plastic double wall corrugated pipe has the features of corrosion resistance, wear resistance, high strength, flexibility etc. Small diameter double wall corrugated pipe is widely used in cable sheathing, pipeline sheathing, fresh air pipeline and other fields.