Hongruntong Marine LLC.
                                                                                                           
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36 Years
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Boat Underwater Lift Bags Flotation Bags Salvage Buoyancy For Shipwreck Salvage

Price Negotiable
Price: US$20-US$1650
MOQ: 1
Delivery Time: 5-7 Work Days
Brand: Hongruntong Marine
Product Description

Boat Underwater Lift Bags Flotation Bags Salvage Buoyancy for  Shipwreck Salvage

 

Description

 

Underwater lift bags are essential tools used for lifting, supporting, and positioning submerged objects in marine and salvage operations. Designed with high-strength materials, these bags provide controlled buoyancy and lifting capabilities for various underwater applications. Equipped with multiple attachment points and reinforced seams, they ensure safety and reliability in lifting heavy loads. Whether for commercial diving, shipwreck recovery, or underwater construction, our lift bags are built to withstand challenging marine environments, offering excellent durability and performance.

 

 

 

Specifications

 

Product Name Underwater 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-ULB01 200 441 800 5
HM-ULB02 500 1,103 1,000 8
HM-ULB03 1,000 2,205 1,300 11
HM-ULB04 2,000 4,410 1,600 20
HM-ULB05 4,000 8,820 2,000 50
HM-ULB06 6,000 13,230 2,300 66
HM-ULB07 8,000 17,640 2,500 75
HM-ULB08 10,000 22,050 2,700 80
HM-ULB09 15,000 33,075 3,100 110
HM-ULB10 20,000 44,100 3,400 130
HM-ULB11 30,000 66,150 3,900 170
HM-ULB12 50,000 110,250 4,600 220
HM-ULB13 70,000 154,350 5,200 310
HM-ULB14 100,000 220,500 5,800 450
HM-ULB15 150,000 330,750 6,600 660
HM-ULB16 200,000 441,000 7,300 900
*Note: Other sizes can be customized according to the requirements.

 

 

Features

 

No Metal Parts in Some Models
Certain designs avoid metal components, reducing weight and improving corrosion resistance.


Tested to International Standards
Every batch is pressure-tested and quality-certified before shipment for maximum reliability.


Available with Custom Branding
OEM/private labeling options allow for customized company branding and specifications.


Cost Effective Alternative to Heavy Lifting Equipment
More affordable, flexible, and easier to use than cranes or ROV-operated lifting systems.

 

 

Applications

 

● Shipwreck salvage
● Sunken vehicle recovery
● Offshore oil rig maintenance
● Subsea pipeline installation

 

 

Advantages

 

Reliable Performance in Emergency Response
Used in disaster relief, flood recovery, and emergency salvage operations, proving their versatility.

 

Enhanced Load Distribution Technology
Our advanced designs minimize stress concentration points, ensuring a longer service life.

 

Competitive Pricing Without Compromising Quality
We provide premium-quality lift bags at competitive prices, offering the best value in the industry.

 

Strong Research Development Capabilities
Our continuous RD investment ensures that we stay at the forefront of underwater lifting technology.

 

 

 

FAQ

 

1. What is an underwater lift bag?
An underwater lift bag is a device used underwater to lift objects or equipment to the surface.

 

2. How does an underwater lift bag work?
An underwater lift bag works by filling with air, which creates buoyancy and allows the bag to lift objects to the surface.

 

3. What are underwater lift bags made of?
Underwater lift bags are typically made of durable materials such as PVC, nylon, or polyurethane.

 

4. How much weight can an underwater lift bag lift?
The lifting capacity of an underwater lift bag can vary depending on its size and design, but they are available in a range of capacities from a few kilograms to several tons.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Hongruntong Marine LLC.
Location C1-7, Xuhui Center, Jinguan North 2nd Street, Shunyi District, Beijing City, P.R. China 101300
Contact Person William Lau

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