GFPP double-wall reinforced corrugated pipe is based on the original polypropylene corrugated pipe, adding glass fibers and nanowhiskers, improving and optimizing the product formula, so that the pipe has higher ring stiffness and better ring flexibility.
1. Unpressurized underground buried industrial sewage pipe;
2. Municipal drainage sewage pipes;
3. External drainage of buildings;
4. Rainwater collection and Domestic sewage discharge.
| DN/ID | Min. Average Inner Diameter | Min. Laminated Wall Thickness | Min. Inner Wall Thickness | Min. Connection Length |
| 100 | 95 | 1 | 1 | 32 |
| 125 | 120 | 1.2 | 1 | 38 |
| 150 | 145 | 1.3 | 1 | 43 |
| 200 | 195 | 1.5 | 1.1 | 54 |
| 225 | 220 | 1.7 | 1.2 | 55 |
| 250 | 245 | 1.8 | 1.4 | 59 |
| 300 | 294 | 2 | 1.4 | 64 |
| 400 | 392 | 2.5 | 2 | 74 |
| 500 | 490 | 3 | 2.2 | 85 |
| 600 | 588 | 3.5 | 2.5 | 96 |
| 800 | 785 | 4.5 | 3 | 118 |
| 1000 | 985 | 5 | 4 | 140 |
| 1200 | 1185 | 5 | 4 | 162 |
| Test Item | Indicator | Test Method | |
| Ring Stiffness (KN/m2) |
SN4 | ≥4 | GB/T9647-2015 |
| SN6.3a | ≥6.3 | ||
| SN8 | ≥8 | ||
| SN10a | ≥10 | ||
| SN12.5 | ≥12.5 | ||
| SN16 | ≥16 | ||
| Impact Resistance（TIR）/% | ≤10 | GB/T 14152-2001 | |
| Ring Flexibility | No crack, no disconnection of the two walls, no reverse bending of the inner wall |
ISO 13968:2008 | |
| Oven Test | No delamination, no cracking | GB/T 19472.1-2019 | |
| Density（kg/m3） | 895-920 | GB/T 1033.1-2008 | |
| Oxidation Induction Time （200℃）/min |
≥20 | GB/T 19466.6-2009 | |
| Ash Content | ≤3 | GB/T 9345.1-2008 | |
| Creep Ratio | ≤4 | GB/T 18042-2000 | |
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