Hongruntong Marine LLC.
| Payment Terms | L/C,T/T,D/A,D/P,Western Union,MoneyGram |
| Supply Ability | 2685 Pcs Per Month |
| Delivery Time | 5-8 Work Days |
| Packaging Details | Wooden Pallets, Wooden Box |
| Name | Underwater Lifting Bags |
| Feature | Durable Construction |
| Material | Superior PVC Coating Fabric |
| Lifting Capacity | 100kg to 60 tons |
| Type | Cylindrical, Parachute, Pillow |
| Layers | 1-6Ply, or As Request |
| Thickness | 0.4mm-2.5mm, or As Request |
| Reinforcement | Nylon Fabric |
| Valve | Inflation and Pressure release |
| Color | Black, Yellow, Orange, or As Request |
| Usage | Underwater air lifting, Salvage, Large buoyancy |
| Standard | IMCA-D-016 |
| Certificate | BV, ABS, DNV, LR, SGS, CCS |
| OEM | Warmly Welcomed |
| Warranty | 36 Months |
| MOQ | 1 |
| Application | Salvage operations, Underwater construction |
| Brand Name | Hongruntong Marine |
| Model Number | HM-UALB61 |
| Certification | BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T,D/A,D/P,Western Union,MoneyGram | Supply Ability | 2685 Pcs Per Month |
| Delivery Time | 5-8 Work Days | Packaging Details | Wooden Pallets, Wooden Box |
| Name | Underwater Lifting Bags | Feature | Durable Construction |
| Material | Superior PVC Coating Fabric | Lifting Capacity | 100kg to 60 tons |
| Type | Cylindrical, Parachute, Pillow | Layers | 1-6Ply, or As Request |
| Thickness | 0.4mm-2.5mm, or As Request | Reinforcement | Nylon Fabric |
| Valve | Inflation and Pressure release | Color | Black, Yellow, Orange, or As Request |
| Usage | Underwater air lifting, Salvage, Large buoyancy | Standard | IMCA-D-016 |
| Certificate | BV, ABS, DNV, LR, SGS, CCS | OEM | Warmly Welcomed |
| Warranty | 36 Months | MOQ | 1 |
| Application | Salvage operations, Underwater construction | Brand Name | Hongruntong Marine |
| Model Number | HM-UALB61 | Certification | BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
The cylindrical Underwater Air Lift Bag is a robust and versatile buoyancy device specifically engineered for high-frequency marine operations in demanding environments such as ports, river engineering sites, and dredging projects. Constructed from high-strength polyester fabric with multi-layer wear-resistant coating, the bag delivers exceptional durability against abrasion, puncture, and mechanical impact.
Its cylindrical configuration ensures stable lifting performance and consistent buoyancy distribution, even under uneven loading conditions. The bag is equipped with reinforced lifting belts, heavy-duty shackles, and industrial-grade inflation valves, allowing for safe and efficient handling during repeated deployment cycles.
Available in a wide range of capacities from 3 tons to over 250 tons, the product is ideal for continuous-use applications where reliability and operational efficiency are critical. It is particularly suited for projects requiring rapid deployment, repetitive lifting, and minimal downtime.
In a major port expansion project in South America, contractors needed to frequently lift and reposition submerged dredging pipelines and heavy sediment equipment in shallow and debris-filled waters. The operating environment included high turbidity, uneven seabed conditions, and continuous daily usage requirements.
Hongruntong cylindrical underwater air lift bags were selected due to their superior abrasion resistance and reliability under repetitive operations. The bags were used to lift and stabilize pipeline sections during dredging and relocation processes.
Over a three-month period, the air lift bags were deployed in over 120 lifting cycles without significant wear or performance degradation. The operation efficiency increased by approximately 40%, as the need for heavy lifting cranes was minimized. The client reported reduced maintenance costs and highlighted the product's durability as a key advantage for long-term projects.
| Product Name | Underwater Air Lift Bags |
|---|---|
| Raw Material | Superior PVC Coating Fabric |
| Type | Cylindrical |
| Size | 500kg, 1000kg, 5000kg, 10000kg, etc |
| Thickness | 0.4mm-2.5mm, or as request |
| Color | Yellow, Blue, Black, etc |
| Density | 0.33-0.9g/cm³ |
| Safety Factor | 7:1 |
| Accessories | Valve, Inflatable Tube, Repair Material |
| OEM | Welcome |
| Warranty | 3 Years |
| Tolerances | +/- 0.03 on densities +/- 0.2 mm on thickness +/- 0 to +3mm on width +/- 0 to +3mm on length |
| Model | Buoyancy [kg] | Buoyancy [lbs] | Diameter [mm] | Length [mm] | Appr. Weight [kg] |
|---|---|---|---|---|---|
| HM-C01 | 200 | 441 | 500 | 1,000 | 5 |
| HM-C02 | 500 | 1,103 | 800 | 1,000 | 8 |
| HM-C03 | 1,000 | 2,205 | 1,000 | 1,500 | 11 |
| HM-C04 | 2,000 | 4,410 | 1,300 | 1,500 | 20 |
| HM-C05 | 4,000 | 8,820 | 1,600 | 2,000 | 50 |
| HM-C06 | 6,000 | 13,230 | 2,000 | 2,000 | 66 |
| HM-C07 | 8,000 | 17,640 | 2,000 | 2,600 | 75 |
| HM-C08 | 10,000 | 22,050 | 2,400 | 2,400 | 80 |
| HM-C09 | 15,000 | 33,075 | 2,600 | 3,000 | 110 |
| HM-C10 | 20,000 | 44,100 | 3,000 | 3,000 | 130 |
| HM-C11 | 30,000 | 66,150 | 3,000 | 4,500 | 170 |
| HM-C12 | 50,000 | 110,250 | 4,000 | 4,000 | 220 |
| HM-C13 | 70,000 | 154,350 | 4,000 | 5,700 | 310 |
| HM-C14 | 100,000 | 220,500 | 4,000 | 8,000 | 450 |
| HM-C15 | 150,000 | 330,750 | 5,000 | 8,000 | 660 |
| HM-C16 | 200,000 | 441,000 | 5,000 | 10,000 | 900 |
Under normal conditions, the bags can be reused for hundreds of cycles with proper maintenance.
Yes, they are highly effective in shallow and confined environments such as rivers and ports.
They are constructed with multi-layer coated fabric specifically designed to resist friction from sand and debris.
With proper preparation, setup and inflation can be completed within minutes.
Avoid contact with sharp objects, monitor air pressure, and ensure proper rigging before lifting operations.
Company Details
Business Type:
Manufacturer
Year Established:
1990
Total Annual:
5,256,780-5,593210
Employee Number:
220~360
Ecer Certification：
Verified Supplier
Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma... Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma...
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