Dredging Discharge Rubber Hose
Dredging discharge rubber hoses are critical components in marine sediment transport systems, designed to convey highly abrasive slurries including sand, gravel, and silt from dredgers to discharge points. Hisea Marine offers both floating discharge hoses (self-buoyant for surface pipelines) and non-floating (submarine) hoses (installed between steel pipes for underwater or deck use). Engineered for extreme durability, our hoses ensure maximum uptime in capital dredging, land reclamation, and maintenance dredging projects.
Overview
Dredging discharge rubber hoses transport mud and silt from dredgers, available in floating and non-floating types. Floating hoses stay on the water surface, while non-floating ones are fitted between steel pipes for enhanced pipeline flexibility.
They serve as connection hoses for cutter dredgers and discharge lines, and also function as jet water hoses for floating steel pipelines. Available diameters range from 200mm to 1300mm, with working pressures of 4–45bar.
Engineered for harsh dredging environments, these hoses resist abrasion from sand, gravel and silt. Constructed with durable materials and multi-layer reinforcement, they feature high flexibility to adapt to dynamic movements and bends, improving alignment and lowering stress on the hose and connections.
Structure and Material:
1. Cover: composed of natural rubber and synthetic rubber.
2. Reinforcement layer: composed of high strength rubber dipped chemical fiber and reinforced by spiral metal wire.
3. Inner rubber liner: composed of wear-proof natural rubber and synthetic rubber.
Name | Matrerials & Advantages |
Multi-Layer Wear-Resistant Lining | Made of highly wear-resistant natural/synthetic rubber, typically with a Shore A hardness of 60-70 degrees and low abrasion loss (≤0.1 cm³/1.61km, according to DIN 53516), significantly extending service life. |
High-Strength Reinforcement Layer | Constructed from dipped chemical fiber cord fabric and multiple layers of spiral steel wire winding, withstanding high internal pressure while maintaining radial flexibility, achieving a minimum bending radius of 6-8 times the outer diameter. |
Weather-Resistant Outer Cover | Made from a synthetic rubber compound resistant to ozone, seawater, and UV radiation, combined with an integral foam layer (typically closed-cell) for floating hoses, ensuring long-term stability in marine floating conditions. |
Customizable End Connections | Available with integral flanges, quick couplings, or camlock fittings, complying with ISO 2084, DIN, JIS and other standards, ensuring reliable sealing and quick installation with the pipeline system. |
Feature:
Name | Features / Details |
Inside Diameter (ID) | 200 mm – 1300 mm (custom sizes available) |
Working Pressure | 4 bar – 45 bar (higher upon request) |
Burst Pressure | ≥ 4 × Working Pressure |
Length per Section | 3 m – 12 m (or as per project requirement) |
Flange Standard | ISO 2084, DIN, ANSI 150#, JIS, or custom |
Temperature Range | -20°C to +50°C (for continuous operation) |
Abrasion Loss | ≤ 0.1 cm³ / 1.61 km (DIN 53516) |
Bending Radius (Min.) | 6 – 8 × OD (for non-floating); specific per design |
Drawing for Dredging Discharge Rubber Hose
Main Technical Parameter
| DN(mm) | Flange OD(mm) | Flange thickness(mm) | Bolt hole | Length(mm) | Working pressure(Mpa) | Burst pressure(Mpa) | Wall thickness(mm) | ||
| P.C.D.(mm) | No. | Hole dia.(mm) | |||||||
| 200±3 | 340±3 | 18±2 | 295±1 | 8 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 34-37 |
| 250±3 | 445±3 | 18±2 | 360±1 | 12 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 34-37 |
| 300±5 | 460±3 | 18±2 | 410±1 | 12 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 35-37 |
| 350±5 | 490±3 | 18±2 | 455±1 | 12 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 35-37 |
| 400±5 | 560±3 | 20±2 | 500±1 | 16 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 35-37 |
| 450±5 | 600±3 | 20±2 | 560±1 | 18 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 35-37 |
| 500±5 | 660±3 | 20±2 | 610±1 | 20 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 40-45 |
| 550±5 | 700±3 | 22±2 | 645±1 | 20 | 22±1 | 1000-3000 | 0.4-1.2 | 3.6 | 40-45 |
| 600±5 | 780±3 | 22±2 | 725±1 | 20 | 26±1 | 1000-3000 | 0.4-1.2 | 3.6 | 40-45 |
| 650±5 | 830±3 | 22±2 | 760±1 | 20 | 27±1 | 1000-3000 | 0.4-1.2 | 3.6 | 40-45 |
| 700±5 | 780±3 | 25±2 | 725±1 | 20 | 27±1 | 1000-3000 | 0.8-1.5 | 4.5 | 40-45 |
| 750±5 | 955±3 | 28±2 | 890±1 | 20 | 30±1 | 1000-3000 | 0.8-1.5 | 4.5 | 40-45 |
| 800±5 | 1050±3 | 30±2 | 970±1 | 24 | 30±1 | 1000-3000 | 1.2-2.5 | 5.5 | 50-52 |
| 850±5 | 1120±3 | 30±2 | 1020±1 | 24 | 33±1 | 1000-3000 | 1.2-2.5 | 5.5 | 50-52 |
| 900±5 | 1168±3 | 35±2 | 1086±1 | 28 | 39±1 | 1000-3000 | 1.5-2.5 | 7.5 | 55-58 |
| 1000±5 | 1295±3 | 40±2 | 1210±1 | 28 | 45±1 | 1000-3000 | 1.5-2.5 | 7.5 | 60-63 |
| 1100±5 | 1400±3 | 45±2 | 1310±1 | 28 | 45±1 | 1000-3000 | 1.5-2.5 | 7.5 | 65-67 |
| 1200±5 | 1515±3 | 50±2 | 1420±1 | 28 | 45±1 | 1000-3000 | 1.5-2.5 | 7.5 | 70-73 |
| 1300±5 | 1600±3 | 50±2 | 1510±1 | 28 | 45±1 | 1000-3000 | 1.5-2.5 | 7.5 | 73-75 |
