15t Salvage Bags Reinforced Seams Long Service Life Easy To Repair
Description
Underwater Air Lift Bags are essential tools for commercial divers and salvage teams, providing controlled buoyancy to lift heavy submerged objects. Made from durable, high-strength materials like reinforced nylon or PVC, these bags can handle extreme pressures at depth. By filling them with compressed air, divers can adjust buoyancy to safely recover shipwrecks, sunken equipment, or debris. Available in various load capacities (from 100kg to 50+ tons), they feature secure rigging points, pressure relief valves, and corrosion-resistant fittings. Whether for marine construction, offshore oil operations, or archaeological recoveries, lift bags ensure efficient and safe underwater lifting.
Specifications
| Product Name | Underwater Air Lift Bags |
| Raw Material | Top-Notch PVC Coating Fabric |
| Type | Parachute |
| 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 |
| 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 | Lifting Capacity | Dimensions | Appr. Weight |
| Parachute | [kg] | [lbs] | [mm] | [kg] |
| HM-P01 | 200 | 441 | 800 | 5 |
| HM-P02 | 500 | 1,103 | 1,000 | 8 |
| HM-P03 | 1,000 | 2,205 | 1,300 | 11 |
| HM-P04 | 2,000 | 4,410 | 1,600 | 20 |
| HM-P05 | 4,000 | 8,820 | 2,000 | 50 |
| HM-P06 | 6,000 | 13,230 | 2,300 | 66 |
| HM-P07 | 8,000 | 17,640 | 2,500 | 75 |
| HM-P08 | 10,000 | 22,050 | 2,700 | 80 |
| HM-P09 | 15,000 | 33,075 | 3,100 | 110 |
| HM-P10 | 20,000 | 44,100 | 3,400 | 130 |
| HM-P11 | 30,000 | 66,150 | 3,900 | 170 |
| HM-P12 | 50,000 | 110,250 | 4,600 | 220 |
| HM-P13 | 70,000 | 154,350 | 5,200 | 310 |
| HM-P14 | 100,000 | 220,500 | 5,800 | 450 |
| HM-P15 | 150,000 | 330,750 | 6,600 | 660 |
| HM-P16 | 200,000 | 441,000 | 7,300 | 900 |
| *Note: Other sizes can be customized according to the requirements. |
Features
High Strength Materials
Constructed from reinforced nylon, PVC, or polyurethane for exceptional tear and puncture resistance.
Corrosion-Resistant Fittings
Stainless steel or anodized aluminum hardware prevents rust in saltwater environments.
Multiple Load Capacities
Available from 100kg to 50+ tons, catering to small recoveries to heavy salvage operations.
Pressure Relief Valves
Automatic venting prevents overexpansion and dangerous rapid ascents.
Applications
● Shipwreck recovery
● Sunken vehicle retrieval
● Debris removal from waterways
● Anchor recovery
Advantages
Chemical Oil Resistance
Our coatings resist degradation from hydraulic fluids, fuels, and marine pollutants.
Modular Air Compatibility
Works with scuba tanks, surface-supplied air, or low-pressure compressors.
Redundant Safety Systems
Some models feature dual air chambers to prevent catastrophic failure.
Custom Branding Sizing
We offer bespoke dimensions, logos, and labeling for commercial clients.
FAQ
1. What is an Underwater Air Lift Bag?
A durable, inflatable device used to provide controlled buoyancy for lifting submerged objects in marine, salvage, and diving operations.
2. How does an air lift bag work?
It is filled with compressed air to displace water, creating upward lift force proportional to its volume and the object's weight.
3. What are the main types of lift bags?
Open-bottom (for shallow water) and closed-cell (for deep water), with varying load capacities (100kg to 50+ tons).
4. What industries use these bags?
Marine salvage, offshore oil/gas, military, underwater construction, scientific research, and recreational diving.
5. Are lift bags reusable?
Yes, high quality bags are designed for repeated use with proper maintenance.
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