Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering Polyurethane Spray Coating and Spray PE Pre Insulated Pipe Production Line, 3-Layer PE Anti-Corrosion Coating Line for Large-Diameter Steel Pipes in Oil, Gas, and Utility Applications, HDPE Jacket Pipe Extrusion Line for Pre-Insulated Pipe Plastic Machinery for Steel Pipe and so on.