Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering Pipe in Pipe Thin Wall Plastic PE HDPE Casing Pipe Extrusion Equipment, HDPE 125mm-315mm Thin Wall Pipe Vacuum Calibration Method Production Machine, Polyurethane Foam Coating Insulation Pipe Making Machine for Hot/Cold Water Pipline and so on.