Hongruntong Marine's Dredge Pipeline is a heavy-duty, engineered rubber pipeline system designed for high-demand sand, slurry, and sediment transport in dredging, port construction, land reclamation, and mining applications. Constructed from multi-layer premium rubber compounds, high-tensile steel wire reinforcement, and a wear-resistant outer protective layer, this pipeline delivers exceptional durability, flexibility, and pressure stability for continuous operation in harsh marine and industrial environments.
Available in diameters from 150mm to 1200mm and custom lengths up to 12 meters, the dredge pipeline supports high-volume slurry flow with solid concentrations up to 75% by weight, making it suitable for suction and discharge duties on cutter suction dredgers, trailing suction hopper dredgers, and land-based pumping systems. Its ultra-wear-resistant inner liner resists abrasion from sand, gravel, and rock particles, while the reinforced structure provides outstanding resistance to UV radiation, saltwater corrosion, ozone cracking, and extreme temperatures ranging from -40°C to +80°C.
Designed with precision flanged connections, the pipeline allows fast, secure, and leak-proof assembly, significantly reducing downtime during installation and relocation. Its flexible structure adapts smoothly to uneven seabeds, tidal movements, and complex routing without kinking or flow restriction.
A major port development group in the Middle East required a reliable slurry transport system to deepen its main navigation channel from 12m to 16m to accommodate large bulk carriers. The project involved continuous transport of coarse sand and shell fragments under high temperatures and high salinity, placing extreme demands on wear resistance and structural stability.
Hongruntong Marine supplied 1,100 meters of 1000mm diameter dredge pipeline with a 16bar working pressure rating, customized for high-abrasion and high-temperature conditions. The pipeline's wear-optimized inner liner maintained integrity under sustained flow velocities up to 6.5m/s, with zero leakage or joint failure over the five-month project. Compared to the client's previous pipeline solution, maintenance intervals were extended by more than 60%, and daily output increased by 27%, reducing overall project cost by 19%.
The client praised the system's stable performance, easy connection design, and long service life under harsh coastal conditions. The project finished ahead of schedule, and the customer has since standardized on Hongruntong Marine dredge pipeline for all regional port and reclamation works.


| Material of Rubber | NR, NBR, SR, CR and etc |
| Material of Flange | Q235B carbon steel paint |
| Reinforcement Layer | Rubber, cord fabric and wire reinforcement |
| Size | 1/2" to 32" |
| Working Pressure | 5-22 Bar or As Request |
| Model Number | HMDH |
| Brand | Hongruntong Marine |
| Application | Water irrigation, mud dredging, water suction etc |
| Packing | Plastic Belt Packing |
| Working Temperature | -40 ℃ ~ +120 ℃ |
| Warranty | 36 Months |
| MOQ | 1 |
| Model | I.D. (inch) | I.D. (mm) | W.P. (bar) | B.P. (bar) | Min Bending Radius | Wear Layer Thickness (mm) | Length (mm) |
|---|---|---|---|---|---|---|---|
| HM-DP150 | 6 | 150 | 5-10 | 15-30 | 8D | 10-20 | 11.8 |
| HM-DP200 | 8 | 200 | 5-10 | 15-30 | 8D | 10-20 | 11.8 |
| HM-DP250 | 10 | 250 | 5-10 | 15-30 | 8D | 10-20 | 11.8 |
| HM-DP300 | 12 | 300 | 10-20 | 30-60 | 12D | 12-25 | 11.8 |
| HM-DP350 | 14 | 350 | 10-20 | 30-60 | 12D | 12-25 | 11.8 |
| HM-DP400 | 16 | 400 | 10-20 | 30-60 | 12D | 12-25 | 11.8 |
| HM-DP450 | 18 | 450 | 10-20 | 30-60 | 12D | 12-25 | 11.8 |
| HM-DP500 | 20 | 500 | 10-20 | 30-60 | 12D | 12-25 | 11.8 |
| HM-DP600 | 24 | 600 | 15-20 | 45-60 | 15D | 20-30 | 11.8 |
| HM-DP650 | 26 | 650 | 15-20 | 45-60 | 15D | 20-30 | 11.8 |
| HM-DP700 | 28 | 700 | 20-25 | 60-75 | 15D | 30-50 | 11.8 |
| HM-DP750 | 30 | 750 | 20-25 | 60-75 | 15D | 30-50 | 11.8 |
| HM-DP800 | 32 | 800 | 20-25 | 60-75 | 15D | 30-50 | 11.8 |
| HM-DP850 | 34 | 850 | 20-25 | 60-75 | 15D | 30-50 | 11.8 |
| HM-DP900 | 36 | 900 | 25-30 | 75-90 | 15D | 30-50 | 11.8 |
| HM-DP1000 | 40 | 1000 | 25-30 | 75-90 | 15D | 50-75 | 11.8 |
| HM-DP1100 | 44 | 1100 | 25-30 | 75-90 | 15D | 50-75 | 11.8 |
The dredge pipeline is built with a specially formulated high-density rubber inner liner that delivers exceptional resistance to abrasive media such as sand, gravel, silt, and rock particles. Tested in accordance with ISO 4649, its abrasion loss is controlled below 70mm³, providing up to three times longer service life compared to conventional rubber pipelines. The liner also features high tear strength and elastic recovery, preventing cracks, punctures, and premature wear even when handling sharp or coarse materials.
Reinforced with multi-layer high-tensile steel wire spirals, the dredge pipeline offers exceptional burst pressure performance and structural rigidity under working pressures up to 25 bar. The reinforcement layer is firmly bonded to the rubber matrix through a high-temperature vulcanization process, eliminating delamination, deformation, or wire breakage under dynamic pressure fluctuations.
The outer layer of the pipeline uses a chloroprene-based rubber compound engineered for long-term exposure to marine environments. It provides excellent resistance to saltwater corrosion, UV radiation, ozone, and temperature extremes, preventing surface hardening, cracking, or material degradation after years of outdoor use.
Each segment of the dredge pipeline is equipped with precision-machined carbon steel flanges that enable strong, alignment-friendly, and leak-proof connections. The flange structure is securely bonded to the pipeline body to avoid separation under pressure or movement. The standardized connection design allows crews to complete joint assembly efficiently, cutting installation time by nearly half compared to traditional coupling systems.
Our standard dredge pipeline supports working pressures from 6 bar to 25 bar. Custom higher-pressure designs are also available based on project needs. Each unit is hydrostatically tested at twice its rated working pressure to ensure safety.
Yes, we offer integrated floating dredge pipeline systems with built-in buoyancy units, specially designed for offshore and long-distance surface transport. These systems maintain stable buoyancy under waves and currents without sinking or twisting.
Under standard sand and silt dredging conditions, the service life is generally 3 to 5 years with proper maintenance. In high-abrasion mining applications, it typically lasts 2 to 3 years. Service life can be extended with regular inspection and proper storage.
Yes, we provide flanges compatible with ANSI, DIN, JIS, GB, and custom drilling patterns to ensure full compatibility with global pipeline systems and equipment.
The pipeline should be stored in a cool, dry, ventilated area away from direct sunlight, heat sources, and chemicals. It should be placed horizontally with proper support to avoid deformation. Covering with UV-protective material is recommended for long-term storage.
