Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering HDPE Hollow Wall Pipe Extrusion Equipment for Sewer, Irrigation, and Infrastructure Construction Projects, HDPE Hollow Wall Winding Pipe Making Machine with PLC Control, Automatic Extrusion Line for HDPE Hollow Wall Winding Pipes up to 4000mm Diameter and so on.