●High ring stiffness: Tested and used in engineering, the ring stiffness is greater than SN8, reaching up to SN16, which is unmatched by ordinary plastic pipes.
●Good corrosion resistance: HDPE has good corrosion resistance, and the specially treated steel belt is completely buried within the HDPE, allowing the pipeline to last over 50 years.
●No leakage: Advanced voltage melting is used between the structural plates, ensuring the seams are uniform and strong.
●Uniform wall thickness: The wall thickness is uniform and consistent (non-corrugated), eliminating weak points, thus ensuring the wall performance is uniform and consistent.
●Easy installation: The dual-flat structure of the inner wall allows for socket connections between pipes and between pipes and inspection wells, facilitating quick installation.
●Low transportation costs: Equipment can be transported close to the construction site, significantly reducing transportation costs.
●Resistant to ground settlement.
| Serial No. | Item | Requirement | |
| 1 | Ring Stiffness (KN/m²) | SN8 | ≥8 |
| SN10 | ≥10 | ||
| SN12.5 | ≥12.5 | ||
| SN16 | ≥8 | ||
| 2 | Impact Performance (TIR) | ≤10% |
|
| 3 | Ring Flexibility | Sample is smooth, no reverse bending, no cracking |
|
| 4 | Oven Test | No delamination or cracking at the weld seam of the drainage pipe |
|
| 5 | Creep Ratio | ≤2% |
|
| 6 | Tensile Strength of Weld Seams | Nominal size/mmNominal diameter | Tubes can bear minimum tensile force (N） |
| 300≤DN/ID≤500 | 600 | ||
| 600≤DN/ID≤800 | 840 | ||
| 900≤DN/ID≤1200 | 1020 | ||
| 1300≤DN/ID2000 | 1460 | ||
| DN/ID≤2000 | 1600 | ||
| 7 | Ring Flexibility | Sample is smooth, no reverse bending, no cracking | |
| 8 | Oven Test | No delamination or cracking at the weld seam of the drainage pipe | |
| 9 | Creep Rate |
≤2% |
|
