Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag
Description
Underwater lift bags are specialized flotation devices used for lifting heavy objects from the seabed to the surface. Designed with high-strength, UV- and saltwater-resistant materials, our lift bags provide exceptional durability and safety in various underwater applications, including marine salvage, deep-sea recovery, shipwreck retrieval, and offshore engineering. Available in capacities ranging from 50 kg to 50,000 kg, our lift bags ensure efficient buoyancy control with built-in relief valves that prevent overinflation. Featuring multiple inflation/deflation points, stainless steel D rings, and reinforced webbing, they offer secure and stable lifting. Our IMCA, ABS, and DNV-compliant lift bags are trusted by professionals worldwide for their reliability and superior performance.
Specifications
| Product Name | Underwater Lift 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 +/- 0.2 mm on thickness +/- 0 to +3mm on width +/- 0 to +3mm on length |
| Model | Buoyancy | Diameter | Length | Appr. Weight | ||
| Cylindrical | [kg] | [lbs] | [mm] | [mm] | [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 | |
| *Note: Other sizes can be customized according to the requirements. | ||||||
Features
High Strength, Durable Materials
Made from heavy-duty, coated nylon or PVC fabric, our lift bags are tear-resistant, UV-protected, and saltwater-resistant, ensuring long-term durability in harsh marine environments.
Advanced Safety Features
Equipped with automatic overpressure relief valves, our lift bags prevent overinflation and sudden ascent, ensuring safe and controlled lifting operations.
Reinforced Load Bearing Straps
Designed with industrial-grade webbing and stainless steel D-rings, our lift bags provide superior load stability and secure attachment to objects, preventing damage during lifting.
Multiple Inflation and Deflation Options
Featuring easy-to-access inflation/deflation ports, our lift bags allow for quick setup and efficient buoyancy control, making operations more flexible and time-saving.
Applications
● Marine salvage operations
● Shipwreck recovery
● Sunken vehicle retrieval
● Offshore platform maintenance
● Subsea pipeline installation
Advantages
Strict Quality Control Certifications
Our products comply with IMCA, ABS, Lloyd’s Register, and DNV standards, ensuring they meet global safety and performance requirements.
Customizable Solutions
We offer custom-designed lift bags tailored to specific customer requirements, including custom buoyancy levels, branding, and special attachment options.
Global Customer Support Fast Delivery
With efficient production and worldwide shipping, we ensure fast delivery times and professional customer support to assist with technical inquiries and operational guidance.
Trusted by Industry Professionals Worldwide
Our underwater lift bags are widely used by commercial divers, salvage teams, offshore engineers, military recovery teams, and marine construction companies, proving their reliability and superior performance in demanding environments.
FAQ
1. What is an underwater air lift bag?
It is a buoyancy device used to lift and recover submerged objects by inflating with air to provide controlled ascent.
2. What types of underwater air lift bags do you manufacture?
We produce open-bottom parachute lift bags, enclosed lift bags, pillow-style lift bags, and custom-designed lift bags.
3. What are the main applications of underwater air lift bags?
They are used for marine salvage, shipwreck recovery, underwater construction, offshore maintenance, military operations, and environmental cleanup.
4. How do underwater air lift bags work?
They are filled with compressed air, generating buoyancy that allows objects to be lifted safely to the surface.
