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HDPE double-wall corrugated pipe features a corrugated outer wall that delivers high ring stiffness and exceptional resistance to soil and traffic loads, paired with a smooth inner wall that ensures efficient hydraulic flow and minimal sediment buildup. Completely corrosion-proof and chemical-resistant, the pipe requires zero maintenance and offers a service life exceeding 50 years, even in aggressive sewage and drainage environments
1. Pipe Size: DN80~DN2600; municipal water supply common sizes: DN100, 150, 200, 300, 400, 600, 800
2. Wall Thickness: Min approx 6mm (DN80); Max approx 30mm (DN2600)
3. Standard Length: 6 meters per piece
4. Material: Ductile iron; cement mortar lining for internal anti-corrosion, asphalt/epoxy coating for external surface
5. Pressure Grade: Common K9 class; pressure bearing 1.0MPa, 1.6MPa, 2.5MPa
6. Connection Method: Flexible socket rubber ring connection, flange connection, mechanical joint connection
7. Production Process: Intermediate frequency furnace smelting → Centrifugal casting → Annealing treatment → Internal & external anti-corrosion coating → Hydrostatic pressure test
8. Service Life: 70-100 years with standard buried construction
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