HDPE Socket-type Double-wall Spiral Wound Pipes——（DN200-DN4600）
HDPE Socket-type Double-wall Spiral Wound Pipes——（DN200-DN4600）
Product Features：
1. Chemical Corrosion Resistance: Excellent resistance to non-oxidizing acids, alkalis, and organic solvents. It does not support the growth of bacteria or algae and is resistant to rusting and scaling.
2. Long Service Life: The material has an aging life of over 112 years, with a designed service life of 50 years.
3. High Impact Resistance: Maintains excellent impact performance even below freezing point; the material will not crack due to water freezing.
4. Light Weight: With a density of less than 1 (lighter than water), it is only 1/8th the weight of concrete pipes of the same specification, making loading, unloading, transportation, and installation highly convenient.
5. Low Friction Coefficient: The Manning’s roughness coefficient (n) of the wound pipe is 0.0078–0.009 (typically taken as 0.01 in design), whereas concrete pipes have an n-value of 0.013–0.014. This means that, for the same diameter, this pipe can increase flow capacity by 30%–40%.
6. Easy Connection: The patented HDPE socket-type double-wall spiral wound pipe features a one-way socket connection, ensuring easy installation and high-efficiency sealing (successfully passing CCTV inspections).
7. Eco-friendly Product: The resin consists entirely of hydrocarbons, causing no environmental pollution; the product is 100% recyclable.
8. Smooth Pipe Wall: The flat exterior wall facilitates construction backfilling and compaction, better demonstrating the pipe-soil interaction mechanism of plastic buried drainage pipes.
9. Low Overall Cost: Due to low water resistance and high flow capacity, smaller diameter pipes can be used, which also reduces the excavation volume required. No concrete foundation is needed—a sand and gravel bedding is sufficient—leading to lower engineering costs. Combined with a 50-year lifespan and low maintenance, the total cost is comparable to that of concrete pipes.
10. Superior Corrosion Resistance: Far exceeds the performance of concrete pipes.
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