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Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag

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Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag

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Brand Name :Hongruntong Marine
Model Number :HM-ULB60
Place of Origin :China
Certification :ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS
MOQ :1
Price :USD24 to USD680 Per Piece
Payment Terms :L/C, D/A, D/P, T/T
Supply Ability :1800 Pieces Per Month
Delivery Time :5-7 Work Days
Packaging Details :Wooden Pallets, Wooden Box
Name :Underwater Lift Bags
Feature :Durable Construction, Easy Filling and Emptying
Reinforcement :Nylon Fabric
Material :PVC Coating Fabric
Lifting Capacity :200kg to 50 tons
Type :Cylindrical
Layers :1-6Ply, or as Request
Thickness :0.4mm-2.5mm, or as Request
Valve :Inflation and Pressure Release
Color :Black, Yellow, Orange, or as Request
Usage :Underwater Air Lifting, Salvage, Large Buoyancy
Application :Structural Load Testing, Proof Load Testing
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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.

Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag

Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag

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.

Cylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift BagCylindrical Underwater Lift Bags Marine Salvage Airbags Inflatable Air Lift Bag

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.

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