Product Introduction
HDPE double wall corrugated pipe has a corrugated outer wall and smooth inner wall. Developed in Germany in the 1980s, now widely used globally. Excellent performance and economic cost. Inner walls are typically blue/black, some brands use yellow.
Features
Unique structure – high strength, compression and impact resistance
Smooth inner wall – low friction, high flow capacity
Convenient connection – reliable seal, no leakage
Light weight – fast construction, low cost
Buried life >50 years
Resistant to acid and alkali corrosion
Green material – non-toxic, non-corrosive, recyclable
Wide temperature range – up to 40°C medium temperature
Low operating cost, no foundation needed under good soil conditions
Applications
Mine and building drainage/ventilation, municipal sewage, irrigation, treatment plants, chemical ventilation pipes, pipeline inspection wells, highway embedded pipes, high voltage cable and telecom protection sleeves.
Specification
| Nominal DN/ID (mm) | Min. Mean Inner Dia (mm) | Min. Laminated Wall Thick (mm) | Min. Inner Wall Thick (mm) | Bonding Length (mm) |
|---|
| 200 | 195 | 1.5 | 1.1 | 54 |
| 300 | 294 | 2.0 | 1.7 | 64 |
| 400 | 392 | 2.5 | 2.3 | 74 |
| 500 | 490 | 3.0 | 3.0 | 88 |
| 600 | 588 | 3.5 | 3.5 | 96 |
| 800 | 785 | 4.5 | 4.5 | 118 |
Performance Indicators
| Ring Stiffness SN4 | ≥4 kN/m² |
| Ring Stiffness SN8 | ≥8 kN/m² |
| Impact Strength TIR | ≤10% |
| Flexible Test | Smooth, no reverse bending, no cracking, no wall separation |
| Oven Test | No bubbles, no delamination, no cracking |
| Creep Rate | ≤4% |
