Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering PUR Spray PE Wrapped Pre-Insulated Pipe Production Line for Direct Buried District Heating Pipelines, Cooling Systems, Polyurethane Spray PE Wrapped Pre-Insulated Pipe Production Line for Sustainable Heating and Oil Pipeline Projects, PUR Spray PE Wrapping Pre-Insulated Pipe Production Line – High-Density PU Foam Insulation for Heating, Cooling & Oil Pipelines and so on.