Hongruntong Marine LLC.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 2680 Pcs Per Month |
| Delivery Time | 5-7 Work Days |
| Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Marine Air Bag |
| Material | High Tensile NR |
| Inner Layer | Natural Rubber |
| Outer Layer | Natural Rubber |
| Diameter | 0.5M-3.0M or as Request |
| Feature | Safe and Environmentally Friendly |
| Reinforcement | Cord Fabric Layer |
| Length | 3M-28M or as Request |
| Working Pressure | 0.05-0.25 MPA |
| Standard | ISO14409:2011 |
| Product Life Expectancy | >20 years |
| Thickness | 5-13Ply, or as Request |
| Application | Vessel Launching and Docking |
| Colour | Black or Customized |
| Brand Name | Hongruntong Marine |
| Model Number | HM-MAB66 |
| Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 2680 Pcs Per Month |
| Delivery Time | 5-7 Work Days | Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Marine Air Bag | Material | High Tensile NR |
| Inner Layer | Natural Rubber | Outer Layer | Natural Rubber |
| Diameter | 0.5M-3.0M or as Request | Feature | Safe and Environmentally Friendly |
| Reinforcement | Cord Fabric Layer | Length | 3M-28M or as Request |
| Working Pressure | 0.05-0.25 MPA | Standard | ISO14409:2011 |
| Product Life Expectancy | >20 years | Thickness | 5-13Ply, or as Request |
| Application | Vessel Launching and Docking | Colour | Black or Customized |
| Brand Name | Hongruntong Marine | Model Number | HM-MAB66 |
| Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS | Place of Origin | China |
| High Light | inflatable ship launching bag ，marine air bag with high load capacity ，durable inflatable ship roll bag | ||
The Hongruntong Marine Air Bag represents an advanced, high-capacity inflatable solution engineered for ship launching, ship landing, heavy lifting, and offshore buoyancy applications. Constructed with multiple layers of high-tensile synthetic cords embedded within natural and synthetic rubber matrices, these air bags offer unparalleled load-bearing capacity, controlled deformation, and exceptional durability under dynamic and static stress conditions.
The inner rubber layer ensures airtight containment, while the cord-reinforced middle layers provide high axial and radial strength to withstand shear and bending forces. The outer abrasion-resistant rubber layer protects against rough surfaces, UV degradation, and chemical exposure, extending operational lifespan.
Compared to traditional steel rollers or slipway infrastructure, marine air bags provide adaptable, low-cost, and rapidly deployable solutions that can conform to uneven terrain, tidal variations, and irregular hull geometries. By combining predictable inflation behavior with precise structural engineering, Hongruntong Marine Air Bags deliver safe and efficient ship-handling solutions while minimizing environmental and civil engineering requirements.
These bags are designed, manufactured, and tested according to ISO 14409 standards, ensuring reliable performance, pressure tolerance, and operational safety in the most demanding marine and industrial scenarios.
In 2022, a North American shipyard faced the challenge of launching a 120-meter LNG-fueled tanker weighing approximately 8,500 tons from a constrained riverside slipway with limited depth and no permanent dry-dock facilities. Hongruntong Marine supplied a complete rolling-launch solution consisting of 32 high-diameter (2.0 m × 20 m) air bags, arranged to form a load-distributing array capable of compensating for slight longitudinal and lateral hull inclinations.
Ground preparation involved leveling the launch surface to within ±25 mm tolerance. Each air bag was individually pressure-calibrated to 0.18-0.20 MPa to ensure uniform stress distribution. The launch operation included synchronized electric winches, real-time pressure monitoring, and safety observers positioned along the hull perimeter.
As the vessel rolled over the inflated bags, the system accommodated minor ground slope deviations and uneven weight distribution without requiring external supports. The LNG tanker reached the water safely within six hours, with hull integrity fully maintained. This project not only reduced infrastructure costs by over 65% compared with traditional slipway launches but also demonstrated the feasibility of deploying air bags for ultra-heavy vessels in constrained urban waterways.
| Product Name | Marine Air Bag |
|---|---|
| Material | 100% High Tensile NR |
| Dimensions | Diameter 0.5m - 3.0m, Length 3.0m - 28.0m, or as Request |
| Working Pressure | 0.05-0.25MPA |
| Technology | Overall Winding, High Pressure, Explosion Proof |
| Metal Parts | Q355 / SS304 / SS316 |
| OEM | Supported |
| MOQ | 1 |
| Repair Tools | Electric Heating Plate, Repair Materials, Glue, Free of Charge |
| Standard | ISO14409:2011 |
| Certificate | ABS, BV, KR, LR, GL, NK, RINA, DNV, RMRS |
| Package | Pallets, Wooden Cases |
| Service Life | 20 Years |
| Warranty | 36 Months |
| Diameter | Working Pressure | Working Height | Bearing Capacity (KN/m) | Bearing Capacity (Ton/m) |
|---|---|---|---|---|
| D=1.0m | 0.14Mpa | 0.6m | 87.96 | 8.98 |
| 0.5m | 109.96 | 11.22 | ||
| 0.4m | 131.95 | 13.46 | ||
| D=1.2m | 0.12Mpa | 0.7m | 94.25 | 9.62 |
| 0.6m | 113.10 | 11.54 | ||
| 0.5m | 131.95 | 13.46 | ||
| 0.4m | 150.80 | 15.39 | ||
| D=1.5m | 0.10Mpa | 0.9m | 94.25 | 9.62 |
| 0.8m | 109.96 | 11.22 | ||
| 0.7m | 125.66 | 12.82 | ||
| 0.6m | 141.37 | 14.43 | ||
| 0.5m | 157.08 | 16.03 | ||
| D=1.8m | 0.09Mpa | 1.1m | 98.96 | 10.10 |
| 1.0m | 113.10 | 11.54 | ||
| 0.9m | 127.33 | 12.98 | ||
| 0.8m | 141.37 | 14.43 | ||
| 0.7m | 155.51 | 15.87 | ||
| 0.6m | 169.65 | 17.31 | ||
| D=2.0m | 0.08Mpa | 1.2m | 100.53 | 10.26 |
| 1.1m | 113.10 | 11.54 | ||
| 1.0m | 125.66 | 12.82 | ||
| 0.9m | 138.23 | 14.11 | ||
| 0.8m | 150.80 | 15.39 | ||
| 0.7m | 163.36 | 16.67 | ||
| 0.6m | 175.93 | 17.95 |
* Other size can be provided follow client's requirements.
Air bags are suitable for vessels of all sizes, including small boats, ferries, offshore supply vessels, and ultra-heavy tankers exceeding 10,000 tons.
The company performs a full engineering assessment including vessel weight, hull geometry, ground slope, and intended operation to recommend exact bag specifications and arrangement.
Yes, they are engineered to resist abrasion, saltwater, UV, oil, and chemical exposure. They maintain elasticity and load-bearing capacity under extreme environmental conditions.
Yes, sensors can be installed to provide real-time pressure and load monitoring, ensuring safe operations and early detection of anomalies.
With proper deployment, inspection, and maintenance, air bags can be used for several years and multiple operations while retaining full load-bearing capacity.
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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