... double wall corrugated pipe machine 1.pipe size: ID90-250mm 2.horizontal corrugator, water cooling, aluminum mould block SBG250 HDPE/PP Double ... high precision and strength, and excellent heat dissipation.Cutting machine: High-strength alloy steel blade, rotary cutting, ... PLC control system, 15 "large color touch screen human-machine interface, high automation, reliable running, easy operation, remote ...