Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering 3lpe Pipe Coating Automatic Anti-Corrosion Coating Machine for Oil and Gas Transmission Pipelines, Technology for Preinsulated Pipe Production Line Jacket Dia. (110-550mm), Steel Pipe Inner & Outer Wall Fbe Coating System Line with Advanced Electrostatic Spraying System for Long-Term Corrosion Protection and so on.