In this video, we walk through the complete operation of Qingdao Huashida's Extra Large Diameter 3PE Coating Line, designed for DN630-3620mm steel pipes. You'll see the full production process from surface preparation through shot blasting, intermediate frequency heating, FBE powder application, adhesive and PE extrusion wrapping, to final inspection. We demonstrate how this system handles super-large diameter pipes for major water infrastructure projects, with detailed footage of the spiral conveyor system, heating technology, and quality control procedures that ensure reliable anti-corrosion coating performance.