Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering Three-Layer Polyethylene (3LPE) Anticorrosion Coating and Beveling Machine Line for Steel Pipes, Electric Pipe Beveler for 3lpe Anticorrosion Straight Pipe Beveling Line, Steel Pipe Beveling Tool for 3lpe Fbe Tube Anticorrosion Coating Production Line and so on.