... pipe production machine mainly including extruder, molding machines, cutting saws, reaming machines. Double-wall corrugated pipe production line ... methods are online reaming, reaming machine. Double-wall corrugated pipe production line mainly including extruder, molding ... pipe production line specifications: Φ90-Φ160, Φ200-Φ500, Φ200-Φ600 Plastic double-wall corrugated pipe production machine