HDPE reinforced hollow wall winding pipe is a flexible pipeline with a wall structure designed according to mechanical principles, resembling a “工” character. The product has the following significant characteristics:
●1. High strength, good compression resistance and impact resistance
●2. Good settlement resistance, low requirements for foundation treatment, suitable for soft soil and sandy foundations
●3. Smooth inner wall, low friction, strong water flow capacity, can replace large diameter concrete pipes with smaller diameters
●4. Connection using electric heat shrink tape or heat shrink sleeves, joints are leak-proof, preventing secondary pollution
●5. Good corrosion resistance, not easily corroded by sewage, wastewater, or chemicals, and resistant to decay from organic materials in soil
●6. Excellent wear resistance, more wear-resistant than steel and cement pipes, with a long service life
●7. Convenient connection, can be connected in the trench and then pushed into the trench as a whole, effectively speeding up project progress, reducing project time and costs
●8. Low seasonal and temperature constraints for construction, can operate normally within -40—60℃
●9. Lightweight, easy to handle, convenient for construction, underground installation only requires an excavator, no large equipment needed, reducing overall project costs.
| No. | Item | Requirement | |||||||||||
| 1 | Ring Stiffness (KN/㎡) | SN8 | ≥8 | ||||||||||
| SN10 | ≥10 | ||||||||||||
| SN12.5 | ≥12.5 | ||||||||||||
| SN16 | ≥8 | ||||||||||||
| 2 | Impact Performance (TIR) | ≤10% | |||||||||||
| 3 | Ring Flexibility | Sample smooth, no reverse bending, no cracking | |||||||||||
| 4 | Oven Test | No delamination or cracking at the fusion seam of the drainage pipe | |||||||||||
| 5 | Creep Ratio | ≤2% | |||||||||||
| 6 | Weld Tensile Strength | Nominal Size/mmNominal Diameter | Pipe can withstand minimum tensile force (N） | ||||||||||
| 300≤DN/ID≤500 | 600≤DN/ID≤800 | 900≤DN/ID≤1200 | 1300≤DN/ID2000 | DN/ID≤2000 | 7 | Ring Flexibility | Sample smooth, no reverse bending, no cracking | ||||||
| 8 | Oven Test | No delamination or cracking at the fusion seam of the drainage pipe | |||||||||||
| 9 | Creep Rate | ≤2% | |||||||||||
