Marine Rubber Airbag Heavy Duty Material Long Lifespan Reliable Support
Description
Marine air bags are heavy-duty, multi-layer pneumatic structures engineered for ship launching, ship landing, heavy lifting, and buoyancy-support operations across a wide range of marine and industrial environments. Their construction incorporates a durable inner rubber layer designed for airtight containment, multiple layers of crisscrossed synthetic-tire-cord reinforcement providing exceptional tensile strength, and a wear-resistant outer rubber layer that withstands abrasion, UV exposure, seawater corrosion, and impact forces.
This composite structure ensures that the air bag can support immense vertical and shear loads while allowing controlled deformation--a mechanical behavior essential for safe rolling motion during vessel launching. Marine air bags adapt to uneven ground conditions, variable tidal levels, and complex hull geometries, giving shipyards the ability to perform large-scale launching operations without building slipways or dry docks.
Case Study
In 2024, a Southeast Asian shipyard faced the challenge of launching a 95-meter offshore supply vessel with a displacement of approximately 5,800 tons in a congested industrial area with no permanent slipway. Hongruntong Marine provided a full engineering solution using 26 marine air bags of 1.8 meters in diameter and 18 meters in length.
From initial movement to complete flotation, the entire launching process took less than five hours and achieved a cost saving of more than 60% compared with a traditional dry-dock approach. The project validated marine-air-bag technology as a safe, efficient, and cost-effective solution for launching long-hull offshore vessels in restricted industrial zones.
Specifications
| 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 |
Performance Data
| Diameter |
Working Pressure |
Working Height |
Bearing Capacity (KN/m) |
Bearing Capacity (Ton/m) |
| D=1.0m |
0.14Mpa |
0.6m |
87.96 |
8.98 |
| D=1.2m |
0.12Mpa |
0.7m |
94.25 |
9.62 |
| D=1.5m |
0.10Mpa |
0.9m |
94.25 |
9.62 |
| D=1.8m |
0.09Mpa |
1.1m |
98.96 |
10.10 |
| D=2.0m |
0.08Mpa |
1.2m |
100.53 |
10.26 |
* Other size can be provided follow client's requirements.
Features
- High Performance Reinforced Structure with Predictable Deformation: Each air bag incorporates multiple layers of synthetic-tire-cord reinforcement arranged at precise angles to achieve optimal tensile and shear performance.
- Advanced Airtightness and Long Cycle Pressure Stability: Engineered for high airtight integrity, allowing them to maintain stable internal pressure over extended operational windows.
- Surface Durability and Enhanced Environmental Resistance: Marine air bags must operate in harsh conditions including seawater, sand, lubricants, UV exposure, and mechanical abrasion.
- Heavy Load Compatibility and Scalable Engineering Design: Engineered to handle a wide tonnage range, from small 200-ton vessels to ships exceeding 15,000 tons displacement.
Applications
- Ship Launching and Landing in Variable Terrain Conditions: Marine air bags are widely used for launching newbuild vessels and hauling ships ashore for maintenance.
- Heavy Lifting and On Land Transport of Oversized Structures: Air bags are effective for lifting and moving large industrial components such as caissons, transformers, prefabricated bridge sections, and offshore modules.
- Buoyancy Assistance for Underwater Installation: Inflated marine air bags provide buoyancy for pipeline installation, salvage operations, and underwater positioning.
Why Choose Hongruntong Marine
- Engineering Driven Manufacturing with ISO Certified Quality Control: Every air bag undergoes pressure-cycle testing, dimensional inspection, ultrasonic layer-bond checks, and valve integrity verification.
- Project Specific Technical Support and Launching Simulation: Hongruntong's engineering team provides tailored calculations including bag spacing, load curves, rolling sequence, pressure profiles, and launch-speed prediction.
- Proven Performance in Global Shipyards and Heavy Industry Projects: Hongruntong air bags are used in Asia, Europe, and the Middle East for shipyards, marine contractors, and offshore builders.
- Long Term Lifecycle Service, Training, and On-Site Supervision: Hongruntong offers on-site supervision, user training, inspection programs, replacement planning, and emergency support.
FAQ
1. How long can marine air bags remain inflated during a project?
Marine air bags can typically maintain stable pressure for 24-48 hours, depending on ambient temperature and load conditions. Hongruntong bags use low-permeability rubber, allowing extended pressure stability suitable for long loading or transport operations.
2. What is the recommended inspection frequency?
Inspections should be conducted before and after each operation. Key checks include surface wear, layer separation, valve sealing, and pressure retention. Annual professional evaluations are recommended for frequent-use shipyards.
3. Can air bags be used on unpaved or uneven ground?
Yes. Air bags are designed to compensate for moderate ground irregularities. However, surfaces should be cleared of sharp objects, and major unevenness should be leveled to maintain stable load distribution.
4. What types of vessels are compatible with air-bag launching?
Air bags can launch fishing vessels, coastal freighters, OSVs, barges, tugs, ferries, and landing craft. Hull shape and weight determine bag spacing and quantity, which Hongruntong engineers calculate for each project.
5. How long is the service life of a marine air bag?
Service life varies with usage frequency and operating environment. Under normal shipyard conditions, Hongruntong air bags typically deliver 5-8 years of reliable performance with proper maintenance and storage.
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