Corrosion Resistant DWC HDPE Pipe SN4 SN8 HDPE Corrugated Pipe Double Wall
Place of Origin:China
Brand Name:xinsen
Certification:ISO 9001:2015, GB/T19472.2-2004
Model Number:DWC-HD
Minimum Order Quantity:Negotiable
Price:USD 8-25 / Meter
Standard Packaging:Standard Packaging
Delivery Time:7-15 Working Days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:50000 Meters per Month
Specifications
Highlight:
Corrosion Resistant DWC HDPE Pipe
,SN8 HDPE Corrugated Pipe Double Wall
,SN4 HDPE Corrugated Pipe Double Wall
Ring stiffness:
SN4 ≥ 4 KN/m² Or SN8 ≥ 8 KN/m²
Wall structure:
Corrugated Outer, Smooth Inner
Material:
High-density Polyethylene
Weight comparison:
1/8 Of Concrete Pipe
Lifespan:
Exceeding 50 Years
Flow efficiency:
N ≈ 0.009
Product Description
High Durability Lightweight DWC HDPE Pipe For Highway And Railway Culvert Applications
HDPE Double Wall Corrugated Pipe
DWC HDPE Pipe (High-Density Polyethylene Double Wall Corrugated Pipe) represents a new generation of lightweight, high-strength plastic piping systems. Manufactured from premium high-density polyethylene resin, the pipe is co-extruded simultaneously with a corrugated outer wall and a smooth inner wall, creating an ideal solution for transportation infrastructure drainage.
Advanced Structural Design
The core innovation of the DWC HDPE pipe lies in its dual-layer composite structure:
- Corrugated Outer Wall: Designed with a precise ring-structured wave pattern that acts like a built-in spring. This delivers exceptional ring stiffness (SN4 ≥ 4 kN/m² or SN8 ≥ 8 kN/m²), enabling the pipe to withstand heavy vehicular traffic loads and soil overburden in highway and railway environments without structural failure.
- Smooth Inner Wall: An ultra-smooth interior surface that minimizes hydraulic friction. It maximizes flow rates, prevents silt or debris accumulation, and eliminates the risk of clogging, ensuring reliable long-term drainage performance under roadways and rail tracks.
Specifications Comparison
| Feature | Concrete Pipe (RCC) | DWC HDPE Pipe | Commercial / Project Benefit |
|---|---|---|---|
| Weight | Extremely heavy; requires heavy cranes | Ultra-lightweight (Approx. 1/8 of concrete) | Drastically reduces freight and installation costs; can often be handled manually |
| Flow Efficiency | Rough surface (n ≈ 0.013); prone to scaling | Ultra-smooth (n ≈ 0.009); anti-scaling | Higher discharge capacity; enables smaller pipe diameters or lower installation slopes |
| Flexibility | Rigid and brittle; cracks easily under ground shifting | Flexible pipeline system; deflects elastically | Excellent seismic resistance; adapts to soil settlement without breaking |
| Chemical Resistance | Corrodes easily in acidic soils or toxic sewage environments | Chemically inert; resists acids, alkalis, and salts | Longer lifespan with maintenance-free service exceeding 50 years |
Applications
- Highway Cross Drainage: Efficient culvert systems under expressways, national highways, and provincial roads for stormwater management
- High-Speed Railway Subgrade: Reliable water drainage under high-speed rail tracks, ballast, and embankment structures
- Bridge Approach Drainage: Lightweight culvert solutions for bridge approaches and interchange ramps where soil settlement is a concern
- Tunnel and Underpass Systems: Corrosion-resistant drainage conduits for road tunnels and pedestrian underpasses
- Airport Runoff Management: Stormwater collection and discharge systems for airport runways, taxiways, and aprons
With its combination of high load-bearing capacity, ease of installation, and structural longevity, the DWC HDPE Pipe is the ultimate cost-effective and eco-friendly piping solution for modern transportation infrastructure.
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