Double-wall corrugated pipe production machine mainly including extruder, molding machines, cutting ... pipe, production diameter range of 63mm-600mm. Molding machine with horizontal structure, chain drive, closed water cooling, ... high yield. Reaming methods are online reaming, reaming machine. Double-wall corrugated pipe production line mainly including ... specifications: Φ90-Φ160, Φ200-Φ500, Φ200-Φ600