From concept to demonstration, this video highlights the evolution and practical outcomes of the DN3500 HDPE Hollow Wall Spiral Pipe Machine. Watch as we walk through the complete extrusion production line, showcasing how it manufactures corrosion-resistant pipes with diameters up to 6500mm. You'll see the machinery in action, learn about the spiral winding process, and discover the key features that ensure a 50+ year service life for applications in drainage, sewage, and industrial infrastructure.