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Dredging Pipe Series
HDPE Dredging Pipe
Standard: GB/T 13663.2-2018
1.Size : OD20-2000mm(1/2inch-80inch).
2.Pressure: PN32-SDR6, PN25-SDR7.4, PN20-SDR9, PN16-SDR11, PN12.5-SDR13.6, PN10-SDR17, PN8-SDR21, PN6-SDR26, PN5-SDR33, PN4-SDR41.
3.Material: PE63, PE80, PE100.
4.Length: 5.8M/11.8M.
5.Applications: Dredge of mud, Mining projects, Chemical industry, Sewage engineering, HDPE pipe for Marine etc.
6.Standard: ISO 4427, GB/T 13663.
7.Delivery: 10-20 days depending on the total quantity.
- Introduction
- Feature
- Specification
- Physical Parameter
- Application
- Download
Introduction
HDPE Dredging Pipe (High-Density Polyethylene Dredging Pipe) is a large-diameter conveying pipe manufactured from high-quality HDPE via extrusion molding or winding molding processes. It is primarily designed for transporting media containing solid particles or corrosive substances—such as sediment, mineral slurry, crushed stone, sewage, and sludge—and serves as core conveying equipment in fields including dredging engineering, mineral mining, and environmental protection.
Description of HDPE (High Density Polyethylene) Dredging Pipe
HDPE material inherently possesses excellent wear resistance. Certain products may be fitted with UHMW-PE (ultra-high molecular weight polyethylene) linings, achieving wear resistance indices 4 to 8 times higher than those of steel pipes. This effectively withstands abrasion caused by solid particles such as silt and gravel, thereby extending the service life of the pipes. HDPE also exhibits outstanding chemical stability, withstanding corrosion from acidic, alkaline, and saline solutions, as well as sewage and chemical waste. It does not rust, age, or crack, making it ideal for conveying media under harsh working conditions.
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Feature
Benefits of HDPE (High Density Polyethylene) Dredging Pipe
• Long service life: With excellent wear resistance and corrosion resistance, it can achieve a service life of over 50 years under normal operating conditions. This is 2–3 times the lifespan of steel pipes and 3–4 times that of concrete pipes.
• Convenient and efficient installation: It weighs only one-eighth as much as steel pipes and one-tenth as much as concrete pipes, eliminating the need for heavy lifting equipment. On-site bending and rapid connections can be realized with ease.
• Low maintenance costs: It is resistant to scaling and blockages, obviating the need for frequent rust removal and anti-corrosion treatments. The post-installation maintenance frequency is only one-fifth that of traditional piping materials, leading to significantly reduced lifecycle costs.
• Safety and environmental friendliness: No risk of leakage during service.
• Wide adaptability: Pipe diameter, wall thickness and special configurations can be customized according to medium type (silt, slurry, sewage, etc.), concentration, pressure and temperature. It supports diverse delivery scenarios including over-water, submerged, land-based and long-distance applications.
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Specification
| GB/T 13663.2-2018 | |||||
| PE100 | SDR26 | SDR21 | SDR17 | SDR13.6 | SDR11 |
| S12.5 | S10 | S8 | S6.3 | S5 | |
| Norminal Diameter DN(mm) | Wall Thickness(mm) | ||||
| 20 | 2.3 | ||||
| 25 | 2.3 | 2.3 | |||
| 32 | 2.3 | 2.4 | 3 | ||
| 40 | 2.3 | 2.4 | 3 | 3.7 | |
| 50 | 2.3 | 2.4 | 3 | 3.7 | 4.6 |
| 63 | 2.5 | 3 | 3.8 | 4.7 | 5.8 |
| 75 | 2.9 | 3.6 | 4.5 | 5.6 | 6.8 |
| 90 | 3.5 | 4.3 | 5.4 | 6.7 | 8.2 |
| 110 | 4.2 | 5.3 | 6.6 | 8.1 | 10 |
| 125 | 4.8 | 6 | 7.4 | 9.2 | 11.4 |
| 140 | 5.4 | 6.7 | 8.3 | 10.3 | 12.7 |
| 160 | 6.2 | 7.7 | 9.5 | 11.8 | 14.6 |
| 180 | 6.9 | 8.6 | 10.7 | 13.3 | 16.4 |
| 200 | 7.7 | 9.6 | 11.9 | 14.7 | 18.2 |
| 225 | 8.6 | 10.8 | 13.4 | 16.6 | 20.5 |
| 250 | 9.6 | 11.9 | 14.8 | 18.4 | 22.7 |
| 280 | 10.7 | 13.4 | 16.6 | 20.6 | 25.4 |
| 315 | 12.1 | 15 | 18.7 | 23.2 | 28.6 |
| 355 | 13.6 | 16.9 | 21.1 | 26.1 | 32.2 |
| 400 | 15.3 | 19.1 | 23.7 | 29.4 | 36.3 |
| 450 | 17.2 | 21.5 | 26.7 | 33.1 | 40.9 |
| 500 | 19.1 | 23.9 | 29.7 | 36.8 | 45.4 |
| 560 | 21.4 | 26.7 | 33.2 | 41.2 | 50.8 |
| 630 | 24.1 | 30 | 37.4 | 46.3 | 57.2 |
| 710 | 27.2 | 33.9 | 42.1 | 52.2 | 64.5 |
| 800 | 30.6 | 38.1 | 47.4 | 58.8 | 72.6 |
| 900 | 34.4 | 42.9 | 53.3 | 66.2 | 81.7 |
| 1000 | 38.2 | 47.7 | 59.3 | 72.5 | 90.2 |
| 1200 | 45.9 | 57.2 | 67.9 | 88.2 | |
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Physical Parameter
| Items | Requirement | Test Parameters | Test Method | |
| Melt mass flow rate (g/10min) | The change in MFR before and after processing (not greater than20%） | Unsprung Weight | 5 kg | GB/T 3682.1 |
| test temperature | 190 ℃ | |||
| Oxidation induction time | ≥20 min | Test Temperature | 210 ℃ | GB/T 19466.6-2009 |
| Longitudinal retraction rate | ≤3 % | GB/T 6671-2001 | ||
| Test Temperature | 110 ℃ | |||
| sample length | 200 mm | |||
| Carbon black content | 2.0 %~2.5 % | — | — | GB/T 13021-1991 |
| Carbon black dispersion/pigment dispersion | ≤class 3 | — | — | GB/T 18251-2000 |
| Ash content | ≤0.1 % | Test Temperature | (850±50）℃ | GB/T 9345.1-2008 |
| Elongation at break en≤5 mm |
≥350 % | Sample shape | Type 2 | GB/T 8804.1-2003 |
| Test speed | 100 mm/min | |||
| Elongation at break 5 mm<en≤12 mm |
≥350 % | Sample shape | Type 1 | |
| Test speed | 50 mm/min | |||
| Elongation at break en>12 mm |
≥350 % | Sample shape | Type 1 | |
| Test speed | 25 mm/min | |||
| or | ||||
| Sample shape | Type 3 | |||
| Test speed | 10 mm/min | |||
| Resistant to slow crack growth en≤5 mm (cone test) |
<10 mm/24 h | — | — | GB/T 19279-2003 GB/T 18476-2001 |
| Resistant to slow crack growth en>5 mm (notch test) |
No damage, no leakage | Test Temperature | 80 ℃ | GB/T 19279-2003 GB/T 18476-2001 |
| Internal test pressure: | ||||
| PE80,SDR11 | 0.80 MPa | |||
| PE100,SDR11 | 0.92 MPa | |||
| Testing time | 500 h | |||
| Type of test | Water-Water | |||
| Hydrostatic strength (20 ℃, 100 h) |
No damage, no leakage | Test Temperature | 20 ℃ | GB/T 6111-2003 |
| Testing time | 100h | |||
| Ring stress: | ||||
| PE80 | 10.0 Mpa | |||
| PE100 | 12.0 Mpa | |||
| Hydrostatic strength (80 ℃, 165 h) |
No damage, no leakage | Test Temperature | 80 ℃ | GB/T 6111-2003 |
| Testing time | 165 h | |||
| Ring stress: | ||||
| PE80 | 4.5 Mpa | |||
| PE100 | 5.4 Mpa | |||
| Hydrostatic strength (80 ℃, 1000 h) |
No damage, no leakage | Test Temperature | 80 ℃ | GB/T 6111-2003 |
| Testing time | 1000 h | |||
| Ring stress: | ||||
| PE80 | 4.0 Mpa | |||
| PE100 | 5.0 Mpa | |||
Feel free to contact us for product catalogs, quotations and professional technical support.
Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
Application
• River and Lake Dredging Sector.
• Port and Marine Engineering Sector.
• Mining and Tailings Disposal Sector.
• Environmental Protection and Wastewater Treatment Sector.
• Industrial and Other Sectors.
Feel free to contact us for product catalogs, quotations and professional technical support.
Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
