INSIDE DIAMETER, OUTER DIAMETER REINFORCEMENT DUPLEX WALL SEWER AND THE MANUFACTURING DEVICE

摘要

PURPOSE: A device for manufacturing a drain pipe including a multi-wall for reinforcing an inner/outer diameter is provided to improve strength of a small size pipe by forming a projected wing having a different direction at an inner and outer side of the small size pipe. CONSTITUTION: An inner/outer diameter forming member(50) includes an outer diameter molding part(52). An outer diameter wing molding part is placed to an outer diameter of a tube forming member. The outer diameter wing molding part is projected to the outside of a small size pipe by connecting to an outer diameter extruder. The outer diameter wing molding part provides a space for providing a coupling member. The outer diameter wing molding part molds an outer diameter wing placed to the outer diameter of the coupling member. An inner diameter wing molding part is placed to inside of the small size pipe. The inner diameter wing forming part is projected to an opposite direction of the outer diameter wing by connecting to the outer diameter extruder.