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Krah pipe is a kind of special-shaped pipe with smooth inner wall and spiral strengthening outer wall. Spigot and socket Krah pipe normally divided into B type and C type, which are green and flexible, use high density polyethylene as raw material, produced by filament winding process in the states of hot-melt, gradually cooled by means of rolling air cooling and spraying in thermal state and before demolding. It is available for a wide range of diameters from 300 mm to 3000 mm, can be connected by socket-joint.Krah pipe has all the features: high strength, light weight, corrosion resistance, no leakage, good sealing and easy construction etc., be widely used in drainage projects.
Krah pipe is a kind of special-shaped pipe with smooth inner wall and spiral strengthening outer wall. Spigot and socket Krah pipe normally divided into B type and C type, which are green and flexible, use high density polyethylene as raw material, produced by filament winding process in the states of hot-melt, gradually cooled by means of rolling air cooling and spraying in thermal state and before demolding. It is available for a wide range of diameters from 300 mm to 3000 mm, can be connected by socket-joint.Krah pipe has all the features: high strength, light weight, corrosion resistance, no leakage, good sealing and easy construction etc., be widely used in drainage projects.
|
Nominal OD |
Min. mean diameter |
The wall thickness of the min. layer pressure |
Min. inner wall thickness |
|
(dn) |
|
|
|
|
mm |
mm |
mm |
mm |
|
200 |
196 |
1.5 |
1.7 |
|
300 |
294 |
1.7 |
2 |
|
400 |
392 |
2.3 |
2.5 |
|
500 |
490 |
3 |
3 |
|
600 |
588 |
3.5 |
3.5 |
|
700 |
673 |
4.1 |
4 |
|
800 |
785 |
4.5 |
4.5 |
|
900 |
885 |
5 |
5 |
|
1000 |
985 |
5 |
5 |
|
1100 |
1085 |
5 |
5 |
|
1200 |
1185 |
5 |
5 |
|
1300 |
1285 |
6 |
5 |
|
1400 |
1385 |
6 |
5 |
|
1500 |
1485 |
6 |
5 |
|
1600 |
1585 |
6 |
5 |
|
1700 |
1685 |
6 |
5 |
|
1800 |
1785 |
6 |
5 |
|
1900 |
1885 |
6 |
5 |
|
2000 |
1985 |
6 |
6 |
|
2100 |
2085 |
6 |
6 |
|
2200 |
2185 |
7 |
7 |
|
2300 |
2285 |
8 |
8 |
|
2400 |
2385 |
9 |
9 |
|
2500 |
2485 |
10 |
10 |
|
2600 |
2585 |
10 |
10 |
|
2700 |
2685 |
12 |
12 |
|
2800 |
2785 |
12 |
12 |
|
2900 |
2885 |
14 |
14 |
|
3000 |
2985 |
14 |
14 |
Krah pipes are the preferred choice for main collector lines in urban drainage and wastewater systems. Their high ring stiffness allows them to withstand deep earth cover and heavy traffic loads without deforming. Additionally, their superior corrosion resistance ensures a long service life when transporting aggressive sewage, outperforming traditional materials like concrete.
These pipes are extensively used in the drainage systems of major projects such as highways, railways, airports, and seaports. Their combination of strength and light weight enables faster, more cost-effective installation compared to concrete pipes, significantly accelerating project timelines.
Ideal for conveying industrial effluent from factories and industrial parks, Krah pipes offer a smooth inner surface that minimizes friction and ensures high flow capacity. Their excellent chemical resistance guarantees the long-term, reliable transport of a wide range of process waters and waste streams.
In water management projects, Krah pipes are used for riverbank protection, canal linings, and water diversion channels. Their leak-proof joints prevent water loss and protect the surrounding soil from contamination, making them efficient for resource conservation.
This is a critical application for Krah pipes. They serve as the primary collection system for leachate in sanitary landfills and containment ponds at wastewater treatment plants. Their ability to resist the highly corrosive chemicals found in leachate is essential for safe and durable long-term operation.
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