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Dredging Pipe Series
HDPE Dredging Pipe
ISO 4427-2
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.
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Feature
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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Specification
| ISO 4427 Pipe Series | S 3.2 | S 4 | S 5 | S 6,3 | S 8 | S 10 | S 12,5 | S 16 | |
| ASTM F714 DR | DR 7.4 | DR 9 | DR 11 | DR 13.6 | DR 17 | DR 21 | DR 26 | DR 33 | |
| Nominal Pressure | PN | PN | PN | PN | PN | PN | PN | PN | |
| PE 100 | = 25 bar | = 20 bar | = 16 bar | = 12,5 bar | = 10 bar | = 8 bar | = 6 bar | = 5 bar | |
| Nominal Size DN (mm) | Equiv Size (in) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
Min T.W. (mm) |
| 20 | 0.79 | 3.0 | 2.3 | 2.0 | 1.5 | 1.2 | 1.0 | 0.6 | 0.6 |
| 25 | 0.98 | 3.5 | 3.0 | 2.3 | 2.0 | 1.5 | 1.2 | 0.8 | 0.8 |
| 32 | 1.26 | 4.4 | 3.6 | 3.0 | 2.4 | 2.0 | 1.5 | 1.0 | 1.0 |
| 40 | 1.57 | 5.5 | 4.5 | 3.7 | 3.0 | 2.4 | 2.0 | 1.2 | 1.2 |
| 50 | 1.97 | 6.9 | 5.6 | 4.6 | 3.7 | 3.0 | 2.4 | 2.0 | 1.5 |
| 63 | 2.48 | 8.6 | 7.1 | 5.8 | 4.7 | 3.8 | 3.0 | 2.5 | 1.9 |
| 75 | 2.95 | 10.3 | 8.4 | 6.8 | 5.6 | 4.5 | 3.6 | 2.9 | 2.3 |
| 90 | 3.54 | 12.3 | 10.1 | 8.2 | 6.7 | 5.4 | 4.3 | 3.5 | 2.7 |
| 110 | 4.33 | 15.1 | 12.3 | 10.0 | 8.1 | 6.6 | 5.3 | 4.2 | 3.3 |
| 125 | 4.92 | 17.1 | 14.0 | 11.4 | 9.2 | 7.4 | 6.0 | 4.8 | 3.8 |
| 140 | 5.51 | 19.2 | 15.7 | 12.7 | 10.3 | 8.3 | 6.7 | 5.4 | 4.2 |
| 160 | 6.3 | 21.9 | 17.9 | 14.6 | 11.8 | 9.5 | 7.7 | 6.2 | 4.9 |
| 180 | 7.09 | 24.6 | 20.1 | 16.4 | 13.3 | 10.7 | 8.6 | 6.9 | 5.5 |
| 200 | 7.87 | 27.4 | 22.4 | 18.2 | 14.7 | 11.9 | 9.6 | 7.7 | 6.1 |
| 225 | 8.86 | 30.8 | 25.2 | 20.5 | 16.6 | 13.4 | 10.8 | 8.6 | 6.8 |
| 250 | 9.84 | 34.2 | 27.9 | 22.7 | 18.4 | 14.8 | 11.9 | 9.6 | 7.6 |
| 280 | 11.02 | 38.3 | 31.3 | 25.4 | 20.6 | 16.6 | 13.4 | 10.7 | 8.5 |
| 315 | 12.4 | 43.1 | 35.2 | 28.6 | 23.2 | 18.7 | 15.0 | 12.1 | 9.7 |
| 355 | 13.98 | 48.5 | 39.7 | 32.2 | 26.1 | 21.1 | 16.9 | 13.6 | 10.9 |
| 400 | 15.75 | 54.7 | 44.7 | 36.3 | 29.4 | 23.7 | 19.1 | 15.3 | 12.3 |
| 450 | 17.72 | 61.5 | 50.3 | 40.9 | 33.1 | 26.7 | 21.5 | 17.2 | 13.8 |
| 500 | 19.69 | 67.6 | 55.8 | 45.4 | 36.8 | 29.7 | 23.9 | 19.1 | 15.3 |
| 560 | 22.05 | 75.7 | 62.5 | 50.8 | 41.2 | 33.2 | 26.7 | 21.4 | 17.2 |
| 630 | 24.8 | 85.1 | 70.3 | 57.2 | 46.3 | 37.4 | 30.0 | 24.1 | 19.3 |
| 710 | 27.95 | 95.9 | 79.3 | 64.5 | 52.2 | 42.1 | 33.9 | 27.2 | 21.8 |
| 800 | 31.5 | 89.3 | 72.6 | 58.8 | 47.4 | 38.1 | 30.6 | 24.5 | |
| 900 | 35.43 | 81.7 | 66.2 | 53.3 | 42.9 | 34.4 | 27.6 | ||
| 1000 | 39.37 | 90.2 | 72.5 | 59.3 | 47.7 | 38.2 | 30.6 | ||
| 1200 | 47.24 | 88.2 | 67.9 | 57.2 | 45.9 | 36.7 | |||
| 1400 | 55.12 | 102.9 | 82.4 | 66.7 | 53.5 | 42.9 | |||
| Nominal pressure (PN) is based on C = 1,25 and an operating temperature of 20°C. Weight is calculated using DN and Minimum wall plus 6% for use in estimating fluid flow. Actual ID will vary. When designing components to fit the pipe ID, refer to pipe dimensions and tolerances in the applicable pipe manufacturing specification. To obtain pressure in psi, multiply bar by 14.5 (1 bar ≈ 14.5 psi). | |||||||||
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Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
Physical Parameter
| Characteristic | Requirement | Test parameters | Test method(s) | |
| Parameter | Value | |||
| Elongation at break for e u≤ 5 mm | ≥350 % | Test piece shape | Type 2 | ISO 6259-1 ISO 6259-3 |
| Test speed | 100 mm/min | |||
| Number of test pieces | According to ISO 6259 | |||
| Elongation at break for 5 mm < e u 12 mm | ≥ 350 % | Test piece shape | Type 1 | ISO 6259-1 ISO 6259-3 |
| Test speed | 50 mm/min | |||
| Number of test pieces | According to ISO 6259 | |||
| Elongation at break for e > 12 mm | ≥ 350 % | Test piece shape | Type 1 | ISO 6259-1 ISO 6259-3 |
| Test speed | 25 mm/min | |||
| Number of test pieces | According to ISO 6259 | |||
| OR | ||||
| Test piece shape | Type 3 | |||
| Test speed | 10 mm/min | |||
| Number of test pieces | According to ISO 6259 | |||
| Longitudinal reversion | u 3 % No effect on surface | Shape and number of test pieces | According to ISO 2505 | ISO 2505 |
| Test temperature: | ||||
| PE 40 | 100 ± 2 °C | |||
| PE 63, PE 80, PE 100 | 110 ± 2 °C | |||
| Time | See ISO 2505 | |||
| Melt mass-flow rate MFR for PE 40 | Change of MFR by processing ± 20 % d | Load | 2,16 kg | ISO 1133:2005, Condition D |
| Test temperature | 190 °C | |||
| Time | 10 min | |||
| Number of test pieces | According to ISO 1133 | |||
| Melt mass-flow rate MFR for PE 63, PE 80, PE 100 | Change of MFR by processing ± 20 % d | Load | 5,0 kg | ISO 1133:2005,Condition T |
| Test temperature | 190 °C | |||
| Time | 10 min | |||
| Number of test pieces | According to ISO 1133 | |||
| Oxidation induction time | ≥20 min | Test temperature | 200 °C | ISO 11357-6:2002 |
| Number of test pieces | 3 | |||
| Effect on water quality | National regulations apply | |||
| Hydrostatic strength at 20 °C |
No failure of any test piece during test period | End caps | Type a | ISO 1167-1 ISO 1167-2 |
| Conditioning period | According to ISO 1167-1 | |||
| Number of test pieces | 3 | |||
| Type of test | Water-in-water | |||
| Test temperature | 20 °C | |||
| Test period | 100 h | |||
| Circumferential (hoop) stress for： |
||||
| PE 40 | 7.0 MPa | |||
| PE 63 | 8.0 MPa | |||
| PE 80 | 10.0 MPa | |||
| PE 100 | 12.4 MPa | |||
| Hydrostatic strength at 80 °C |
No failure of any test piece during test period | End caps | Type a | ISO 1167-1 ISO 1167-2 |
| Conditioning period | According to ISO 1167-1 | |||
| Number of test pieces | 3 | |||
| Type of test | Water-in-water | |||
| Test temperature | 80 °C | |||
| Test period | 165 h | |||
| Circumferential (hoop) stress for： |
||||
| PE 40 | 2.5 MPa | |||
| PE 63 | 3.5 MPa | |||
| PE 80 | 4.5 MPa | |||
| PE 100 | 5.4 MPa | |||
| Hydrostatic strength at 80 °C |
No failure of any test piece during test period | End caps | Type a | ISO 1167-1 ISO 1167-2 |
| Conditioning period | According to ISO 1167-1 | |||
| Number of test pieces | 3 | |||
| Type of test | Water-in-water | |||
| Test temperature | 80 °C | |||
| Test period | 1000 h | |||
| Circumferential (hoop) stress for： |
||||
| PE 40 | 2.0 MPa | |||
| PE 63 | 3.2 MPa | |||
| PE 80 | 4.0 MPa | |||
| PE 100 | 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.
