Thickened Corrosion Resistant Anti Burst Marine Buoyancy Bags for Salvage Lift
Hongruntong Marine Buoyancy Bags are industrial underwater lifting systems developed for subsea construction, marine civil engineering, offshore maintenance, and underwater recovery operations requiring stable load handling performance under complex underwater working conditions.
The product is engineered using reinforced multilayer synthetic fabric combined with high-strength internal load-support assemblies, providing controlled buoyancy output and structural stability during heavy-duty marine lifting procedures.
A large-scale bridge rehabilitation project in South America required underwater replacement of submerged steel reinforcement assemblies. The engineering contractor faced operational restrictions due to the bridge remaining active throughout the rehabilitation program.
Hongruntong Marine Buoyancy Bags were selected to support underwater lifting and stabilization operations. Commercial divers installed multiple buoyancy units around designated lifting points, allowing controlled inflation procedures that reduced structural load pressure and improved handling precision.
The buoyancy system reduced operational interruption duration and minimized the requirement for large offshore support vessels. Project supervisors reported strong abrasion resistance despite repeated contact with submerged concrete surfaces and steel reinforcement edges.
| Product Name | Buoyancy Bags |
| Raw Material | PVC coating fabric |
| Type | Cylindrical |
| Size | 500kg, 1000kg, 5000kg, 10000kg, etc |
| Thickness | 0.4-1.2mm, or as request |
| Color | Yellow, Blue, Black, etc |
| Density | 0.33-0.9g/cm³ |
| Safety Factor | 7:1 |
| Tolerances | ±0.03 on densities, ±0.2mm on thickness, ±0 to +3mm on width, ±0 to +3mm on length |
| Model | Buoyancy (kg) | Buoyancy (lbs) | Diameter (mm) | Length (mm) | Weight (kg) |
|---|---|---|---|---|---|
| HM-ULB01 | 200 | 441 | 500 | 1,000 | 5 |
| HM-ULB02 | 500 | 1,103 | 800 | 1,000 | 8 |
| HM-ULB03 | 1,000 | 2,205 | 1,000 | 1,500 | 11 |
| HM-ULB04 | 2,000 | 4,410 | 1,300 | 1,500 | 20 |
| HM-ULB05 | 4,000 | 8,820 | 1,600 | 2,000 | 50 |
| HM-ULB06 | 6,000 | 13,230 | 2,000 | 2,000 | 66 |
| HM-ULB07 | 8,000 | 17,640 | 2,000 | 2,600 | 75 |
| HM-ULB08 | 10,000 | 22,050 | 2,400 | 2,400 | 80 |
| HM-ULB09 | 15,000 | 33,075 | 2,600 | 3,000 | 110 |
| HM-ULB10 | 20,000 | 44,100 | 3,000 | 3,000 | 130 |
| HM-ULB11 | 30,000 | 66,150 | 3,000 | 4,500 | 170 |
| HM-ULB12 | 50,000 | 110,250 | 4,000 | 4,000 | 220 |
| HM-ULB13 | 70,000 | 154,350 | 4,000 | 5,700 | 310 |
| HM-ULB14 | 100,000 | 220,500 | 4,000 | 8,000 | 450 |
| HM-ULB15 | 150,000 | 330,750 | 5,000 | 8,000 | 660 |
| HM-ULB16 | 200,000 | 441,000 | 5,000 | 10,000 | 900 |
- Enhanced Operational Safety Engineering: Reinforced structural configuration supports stable load distribution while minimizing uncontrolled displacement risk during underwater operations.
- Balanced Heavy-Load Stability Performance: Internal load-support structure maintains balanced lifting performance during underwater handling of irregularly shaped structures and machinery.
- Multi-Layer Abrasion and Fatigue Resistance: External material system incorporates reinforced multilayer protective coatings engineered for resistance against underwater abrasion, puncture damage, and environmental fatigue.
- Efficient Underwater Handling Capability: Compact foldable configuration simplifies transportation and onboard storage while reducing preparation time before subsea operations.
- Bridge and Marine Infrastructure Rehabilitation: Controlled lifting support for underwater bridge maintenance, structural reinforcement replacement, and marine civil engineering projects.
- Commercial Diving and Underwater Service Operations: Submerged object repositioning, equipment stabilization, inspection support, and controlled recovery procedures.
- Marine Debris and Structural Recovery: Underwater recovery operations involving submerged steel assemblies, damaged construction components, and marine debris removal.
- Specialized Marine Manufacturing Expertise: Product engineering optimized for high pressure, abrasive environments, and heavy-duty subsea handling requirements.
- Industrial-Grade Production Quality Control: Strict quality management procedures covering raw material inspection, reinforced seam fabrication, and pressure retention evaluation.
- Project-Oriented Customization Capability: Flexible manufacturing for customized buoyancy systems according to project-specific operational requirements.
- Responsive Technical and Delivery Support: Coordinated production scheduling, export logistics capability, and responsive technical communication for international projects.
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