HDPE Dredging pipeline
HDPE Dredging pipeline
HDPE Dredging pipeline
- Details
- Specifications
Introduction
Standard:ISO 4427-2,EN 12201-2,AS/NZS 4130,BS 6920,GB/T 13663.
The end: Plain end
Length:6meter,or customization.≤63mm coiled pipe.
Color：black inside and out side,other color customization accepted.
Characteristics
1.Has a density of 0.95-0.97,lighter than PVC,and does not require heavy machinery for installation and transportation.
2.Good cold resistance,seismic resistance,impact resistance,and toughness.
3.Good acid and alkali resistance,no scaling,and good chemical resistance,and can be used for chemical and seawater transfer.
4.Good elongation and bending flexibility,and small size pipes can be curled to reduce fittings and leakage.
5.Meets food grade requirements and can be used for milk and edible oil transfer.
Applications
1. Chemical and Petrochemical Industries
Application Scenarios: Transportation of corrosive liquids (e.g., acids, alkalis, salt solutions), chemical raw materials, or gases.
Advantages:
HDPE material offers strong corrosion resistance against strong acids, alkalis, and other media; flange connections ensure leak-proof performance under high-pressure or high-temperature conditions.
2. Sewage Treatment and Environmental Engineering
Application Scenarios: Sewage pipelines, sludge transport, septic tank connections, and environmental treatment systems.
Advantages:
Resistant to abrasion and biodegradation, suitable for sewage containing solid particles; flange connections facilitate quick installation and maintenance, adapting to complex underground networks.
3. Oil Fields and Mining Pipelines
Application Scenarios: Tailings slurry transport in mines, oilfield injection pipelines, and shale gas fracturing flowback fluid pipelines.
Advantages:
High impact resistance, capable of withstanding abrasive media like sand and gravel; flexibility accommodates ground subsidence or geological activity.
4. Marine and Offshore Engineering
Application Scenarios: Seawater desalination pipelines, offshore platform water supply, and subsea pipelines (requires reinforced HDPE for special cases).
Advantages:
Resists seawater corrosion, avoiding rust issues in metal pipes; buoyancy characteristics suitable for shallow-water floating pipelines.
Physical properties
Item | Requirements | Test method |
Elongation at break | ≥350% | EN ISO 6259-1 and EN ISO 6259-3 |
Melt mass-flow rate 195℃,5kg MFR for PE 100 | Change of MFR by processing±20 % | EN ISO 1133-1 |
Longitudinal reversion 110℃, % | ≤3 | EN ISO 2505 |
Oxidation induction time 210℃ | ≥10min | EN ISO 11357-6 |
Hydraulic Pressure Test ,20℃, Hoop Stress is 12.4 MPa, 100h | NO Breakage/Leakage | EN ISO 1167-1:2006 and EN ISO 1167-2 |
Hydraulic Pressure Test,80℃, Hoop Stress is 5.4 MPa, 165h | NO Breakage/Leakage | EN ISO 1167-1:2006 and EN ISO 1167-2 |
Hydraulic Pressure Test,80℃, Hoop Stress is 5.0 MPa, 1000h | NO Breakage/Leakage | EN ISO 1167-1:2006 and EN ISO 1167-2 |
Technical of Material
Technical Specifications | PE 100 | Unit | Test Method |
Density at 23℃ | 0.955 | g/cm³ | ISO 1183 |
MFR 190°/5 kg | 0.23 | g/10 min | ISO 1133 |
Mechanical Properties | |||
Yield Stress | 23 | MPa | ISO 527 |
Tensile Modulus | >1000 | MPa | ISO 527 |
Oxidation-Induction Time at 210℃ | ≥20 | min | ISO TR 10837 |
Carbon Black Content (Black Only) | ≥2~2.5 | % | ISO 6964 |
Resistance to S.C.P (slow crack propagation =4.6 Mpa,80°℃ Notched) | >1000 | h | ISO 13479 |
Resistance to R.C.P (Rapid Crack Propagation 54-test 110/10 mm,“C) | >10 | bar | ISO DIS 13477 |
Elongation at break | ≥500 | % | ISO 6259 |
Linear Thermal Expansion | 1.5× | ℃-1 | ASTM D696(20-60℃) |
Electrical Properties | |||
Electric Strength | >20 | kV/mm | ASTM D149 |
Volume Resistivity | >10¹⁹ | ΩM | ASTM D257 |
Temperature and working pressure curve
Compensation coefficient of long-term working pressure for HDPE pipes at working temperature of 38-40°C.
Working temperature ℃ | Compensation coefficient |
4 | 1.25 |
10 | 1.17 |
15 | 1.1 |
23 | 1 |
27 | 0.94 |
32 | 0.86 |
Specifications
PE100 Nominal pressure bar | 0.4MPa | 0.5MPa | 0.6MPa | 0.8MPa | 1.0MPa | 1.25MPa | 1.6MPa | 2.0MPa | 2.5MPa |
PN4 | PN5 | PN6 | PN8 | PN10 | PN12.5 | PN16 | PN20 | PN25 | |
Pipe series | SDR41 | SDR33 | SDR26 | SDR21 | SDR17 | SDR13.6 | SDR11 | SDR9 | SDR7.4 |
S20 | S16 | S12.5 | S10 | S8 | S6,3 | S5 | S4 | S3,2 | |
Outside Diameter | Wall Thickness (mm) | ||||||||
20 | - | - | - | - | - | - | 2 | 2.3 | 3 |
25 | - | - | - | - | - | 2 | 2.3 | 3 | 3.5 |
32 | - | - | - | - | 2 | 2.4 | 3 | 3.6 | 4.4 |
40 | - | - | - | 2 | 2.4 | 3 | 3.7 | 4.5 | 5.5 |
50 | - | - | 2 | 2.4 | 3 | 3.7 | 4.6 | 5.6 | 6.9 |
63 | - | - | 2.5 | 3 | 3.8 | 4.7 | 5.8 | 7.1 | 8.6 |
75 | - | - | 2.9 | 3.6 | 4.5 | 5.6 | 6.8 | 8.4 | 10.3 |
90 | - | - | 3.5 | 4.3 | 5.4 | 6.7 | 8.2 | 10.1 | 12.3 |
110 | - | - | 4.2 | 5.3 | 6.6 | 8.1 | 10 | 12.3 | 15.1 |
125 | - | - | 4.8 | 6 | 7.4 | 9.2 | 11.4 | 14 | 17.1 |
140 | - | - | 5.4 | 6.7 | 8.3 | 10.3 | 12.7 | 15.7 | 19.2 |
160 | - | - | 6.2 | 7.7 | 9.5 | 11.8 | 14.6 | 17.9 | 21.9 |
180 | - | - | 6.9 | 8.6 | 10.7 | 13.3 | 16.4 | 20.1 | 24.6 |
200 | - | - | 7.7 | 9.6 | 11.9 | 14.7 | 18.2 | 22.4 | 27.4 |
225 | - | - | 8.6 | 10.8 | 13.4 | 16.6 | 20.5 | 25.2 | 30.8 |
250 | - | - | 9.6 | 11.9 | 14.8 | 18.4 | 22.7 | 27.9 | 34.2 |
280 | - | - | 10.7 | 13.4 | 16.6 | 20.6 | 25.4 | 31.3 | 38.3 |
315 | 7.7 | 9.7 | 12.1 | 15 | 18.7 | 23.2 | 28.6 | 35.2 | 43.1 |
355 | 8.7 | 10.9 | 13.6 | 16.9 | 21.1 | 26.1 | 32.2 | 39.7 | 48.5 |
400 | 9.8 | 12.3 | 15.3 | 19.1 | 23.7 | 29.4 | 36.3 | 44.7 | 54.7 |
450 | 11 | 13.8 | 17.2 | 21.5 | 26.7 | 33.1 | 40.9 | 50.3 | 61.5 |
500 | 12.3 | 15.3 | 19.1 | 23.9 | 29.7 | 36.8 | 45.4 | 55.8 | - |
560 | 13.7 | 17.2 | 21.4 | 26.7 | 33.2 | 41.2 | 50.8 | 62.5 | - |
630 | 15.4 | 19.3 | 24.1 | 30 | 37.4 | 46.3 | 57.2 | 70.3 | - |
710 | 17.4 | 21.8 | 27.2 | 33.9 | 42.1 | 52.2 | 64.5 | 79.3 | - |
800 | 19.6 | 24.5 | 30.6 | 38.1 | 47.4 | 58.8 | 72.6 | 89.3 | - |
900 | 22 | 27.6 | 34.4 | 42.9 | 53.3 | 66.2 | 81.7 | - | - |
1000 | 24.5 | 30.6 | 38.2 | 47.7 | 59.3 | 72.5 | 90.2 | - | - |
1200 | 29.4 | 36.7 | 45.9 | 57.2 | 67.9 | 88.2 | - | - | - |
