HDPE Winding Reinforced 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
(dn) | Min. mean diameter | The wall thickness of the min. layer pressure | Min. inner wall thickness |
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 |
Item | Product Parameter |
Ring stiffness (KN/m 2 ) | SN4 ≥ 4, SN8 ≥ 8, SN16 ≥ 16 |
Impact performance | TRL ≤ 10% |
Ring flexibility | No delamination, no cracking, no buckling deformation, no dents, no bulges |
Creep rate | ≤4 |
Tensile strength of Seams
DN/ID ≤ 300
400 ≤ DN/ID ≤ 500
600 ≤ DN/ID ≤ 700
DN/ID ≥ 800 | The Minimum endurable tensile force (KN)
≥ 380
≥ 510
≥ 760
≥ 1020 |
Oven test | No delamination, no cracking on the seams |
Installation Instructions
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q:Is the quality of your products stable?
A:The company has a complete QC system, and each batch of products will be sampled and the samples will be kept for 5 years.
Q:Can you do OEM?
A:Yes, of course. We can produce the products as per your request.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 10-15 days if the goods are not in stock, it is according to quantity.
Q: What is your terms of payment ?
A: Payment<=5000USD, 100% in advance. Payment>=5000USD, 30% T/T in advance,balance before shipment. If you have another question, please feel free to contact us at any time.
