This production line is to produce heavy-caliber pipe,such as MDPE/HDPE. This kind of pipe is heat-resistant, perdurable etc. It is a good choose to transport gas and water between cities. Production line character: Efficient extrusion machinery: Haitian's its own different distance corrugated screw matched with this can increase the output. Screw compound head: material is equality etc. Vacuum fix caliber and cooling system: fast and efficient etc. Drawing: frequency conversion timing Cutting: smooth.