Product Introduction
Hard Permeable Pipe is a high-performance underground drainage pipe designed to provide rapid water collection, filtration, and discharge for modern infrastructure construction. The product is commonly known as a drainage blind pipe, perforated drainage pipe, or corrugated permeable pipe.
Manufactured from premium HDPE material, the pipe combines flexibility, compressive strength, and excellent hydraulic conductivity. The pipe wall adopts a corrugated reinforced design that improves structural rigidity while maintaining flexibility for easy installation.
The upper part of the pipe contains precision drainage holes that allow groundwater to enter quickly. The lower solid section prevents water leakage and helps transport collected water efficiently toward drainage outlets.
Compared with traditional stone blind ditch systems, Flexible Permeable Pipe products provide lower construction costs, higher drainage efficiency, reduced maintenance, and longer service life.
The product is widely applied in highway drainage, railway projects, retaining wall drainage systems, tunnel engineering, slope stabilization, airport foundations, and landfill seepage systems.
Product Technical Parameters
| Item |
HPP80 |
HPP100 |
HPP150 |
HPP200 |
| Inner Diameter mm |
80 |
100 |
150 |
200 |
| Outer Diameter mm |
95 |
118 |
172 |
228 |
| Pipe Weight kg/m |
0.55 |
0.72 |
1.25 |
2.10 |
| Ring Stiffness KN/m² |
8 |
10 |
12 |
16 |
| Water Flow Capacity L/min |
260 |
420 |
760 |
1150 |
| Opening Area % |
20 |
22 |
24 |
25 |
| Compression Resistance KPa |
350 |
420 |
500 |
650 |
Material Performance Table
| Test Item |
Standard |
Result |
| Tensile Strength |
ASTM D638 |
≥20MPa |
| Elongation At Break |
ASTM D638 |
≥400% |
| Chemical Resistance |
Acid Alkali Salt |
Excellent |
| UV Aging Resistance |
ASTM G154 |
Qualified |
| Impact Strength |
ASTM D2444 |
No Cracks |
| Low Temperature Brittleness |
-20℃ |
Qualified |
| Water Absorption |
ASTM D570 |
≤0.3% |
FAQ
What is the main advantage of Hard Permeable Pipe
Its semi-perforated structure provides efficient water collection while preventing secondary leakage and maintaining long-term drainage performance.
Can geotextile fabric be added outside the pipe
Yes. Filter fabric wrapping is optional and helps prevent sediment entering the drainage system.
Is the pipe suitable for cold regions
Yes. HDPE material maintains flexibility and impact resistance even in low-temperature environments.
How is the pipe installed
The pipe is usually laid inside gravel trenches or behind retaining walls with proper slope drainage design.
What projects commonly use Flexible Permeable Pipe
Highways, railways, tunnels, airports, retaining walls, landfills, sports fields, and landscaping drainage systems.
