HDPE double-wall corrugated pipe using HDPE as main material, and adds various plastic additives,then by twin-screw extrusion, a pipe formed which consist of two layers, inner smooth wall and outer corrugation.
Features:1 corrosion resistance
2 light weight, easy to transport and handle
3 good abrasion resistance
4 longevity
Application :
Widely used in the drainage of railway ,highway ,tunnel , waste landfill, green belts ,sports ground and slopes with high water content, etc.
1 Municipal engineering rainwater, sewage discharges;
2 Industrial wastewater discharge, residential drainage works;
3 Mine ventilation, drainage works;
4 Agriculture, forestry, irrigation and drainage
5 The water works
Performance parameter :
item | technical parameter |
ring stiffness(KN/m2) | ≥6.3 |
flattening test | Give pressure in vertical and diameter deformation at 40%,unloading immediately, it no crack, no separation of layers |
Hammer falling impact test | It should be no cracks, under the condition of 0℃, one meter height, and be stricked ten times by a 1 kg hammer. |
low temperature drop test | The sample should no cracks, under the condition of -30℃, one meter height and free falling. |
vertical shrinkage ratio (%) | ≤3 |
water permeable area (cm per linear meter) | ≥42 |
hole density | 10×1mm≤30×3mm surface should be homogeneous ,and the inner wall should be smooth , no burr. |
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