Wondering how the Continuous Polyurethane Spraying Thermal Winding Polyethylene Production Line creates high-performance pre-insulated pipes? In this video, we walk through the complete manufacturing process—from steel pipe preparation and polyurethane foam spraying to PE wrapping and final pipe sealing. See real-time demonstrations of key equipment and learn how this advanced production line enhances insulation properties, reduces energy loss, and ensures uniform quality for buried pipeline applications.