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Product Name | HDPE Double-wall Corrugated Pipe |
Color | Black |
Specification | DN200-DN800mm |
Ring stiffness | SN4 SN6 SN8 |
Length | 6m / piece or according to your requirements |
Main application | Drainage and sewage, irrigation, water conveyance, waterlogging drainage, fluid transportation,etc |
Guarantee | 70 years |

Inner diameter DN (mm) | Minimum Average Inner Diameter d (mm) | Minimum joints layer thickness e (mm) | Minimum inner layer thickness e 1 (mm) | Jointing length A(mm) | EXW price (USD/M) | ||
SN4 | SN8 | ||||||
200 | 195 | 1.5 | 1.1 | 54 | 3.762 | 4.918 | |
300 | 294 | 2.0 | 1.7 | 64 | 6.443 | 8.73 | |
400 | 392 | 2.5 | 2.3 | 74 | 11.066 | 14.508 | |
500 | 490 | 3.0 | 3.0 | 85 | 14.164 | 21.639 | |
600 | 588 | 3.5 | 3.5 | 96 | 27.541 | 30.492 | |
700 | 687 | 4.0 | 4.0 | 107 | 43.796 | 51.338 | |
800 | 785 | 4.5 | 4.5 | 118 | 48.492 | 55.377 | |
Item | Index | |||
Ring stiffness(KN/㎡) | SN2 | ≥2 | ||
SN4 | ≥4 | |||
(SN6.3) | ≥6.3 | |||
SN8 | ≥8 | |||
(SN12.5) | ≥12.5 | |||
SN16 | ≥16 | |||
Impact performance(TIR)/ % | ≤10 | |||
Ring flexibility | The sample is smooth, no reverse bending, no cracking, no disengagement of the two walls | |||
Oven test | No bubbles, no delamination, no cracking | |||
Creep ratio | ≤4 | |||
Note: The values in parentheses are non-preferred ring stiffness grades. | ||||







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