High-Density Polyethylene Dredge Pipeline System for Marine & River Dredging Projects
Qingdao Rolande’s HDPE Dredging Pipe is engineered specifically for the highly abrasive environments of cutter suction dredgers (CSD), amphibious dredgers, and sand mining operations. Produced using premium high-density polyethylene resin blended with advanced anti-UV, anti-aging, and wear-resistant additives, our pipes feature a seamless, solid-wall extrusion design. Equipped with loose stub ends and galvanized steel flanges, they ensure a leak-proof, highly flexible, and rapid-assembly pipeline over water or rugged terrain.
Unmatched Wear Resistance: Outlasts traditional steel pipes by 4 to 8 times when transporting highly abrasive slurries, coarse sand, and coral mud.
High Flexibility & Wave Tolerance: Exceptional impact strength and elasticity allow a string of 4-8 pipes to bend up to 360° on water, successfully absorbing the impact of heavy sea waves and currents without cracking.
Optimized Flow Efficiency: The ultra-smooth inner surface reduces friction, decreasing pumping head loss and increasing material transport efficiency by 20% to 30% compared to steel alternatives.
Zero Maintenance & 50-Year Lifespan: Completely immune to marine electrochemical corrosion, chemical erosion, and marine organism adhesion. No painting or anti-rust treatment required.
| Nominal OD (mm) | Wall Thickness (mm) per Pressure Rating & SDR | ||||
|---|---|---|---|---|---|
| SDR26 (0.6 MPa) | SDR21 (0.8 MPa) | SDR17 (1.0 MPa) | SDR13.6 (1.25 MPa) | SDR11 (1.6 MPa) | |
| 200 | 7.5 | 9.6 | 11.9 | 14.7 | 18.2 |
| 250 | 9.6 | 11.9 | 14.8 | 18.4 | 22.7 |
| 315 | 12.1 | 15.0 | 18.7 | 23.2 | 28.6 |
| 400 | 15.3 | 19.1 | 23.7 | 29.4 | 36.3 |
| 500 | 19.1 | 23.9 | 29.7 | 36.8 | 45.4 |
| 630 | 24.1 | 30.0 | 37.4 | 46.3 | 57.2 |
| 800 | 30.6 | 38.1 | 47.4 | 58.8 | 72.7 |
Discharge and suction pipelines for Cutter Suction Dredgers (CSD) and Jet Suction Dredgers.
Land reclamation, coastal expansion, and harbor deepening projects.
Long-distance transport of mining tailings, industrial slurries, and water treatment waste.
Q: Why is HDPE preferred over steel pipes for floating dredge lines?
A: HDPE pipes weigh only 1/8th of steel pipes, drastically lowering shipping, crane handling, and labor costs. Their natural flexibility eliminates the need for frequent ball joints, making the pipeline safer in rough waters.
Contact: Bill Wang
Phone: +8615092082156
Tel:
Email: info@qingdaorolande.com
Add: Room 5-607,37 Jiushuixi rd, Qingdao,China
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