Hongruntong Marine LLC.
                                                                                                           
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36 Years
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15t Salvage Bags Reinforced Seams Long Service Life Easy To Repair

Price Negotiable
Price: US$54-US$784
MOQ: 1
Delivery Time: 5-8 Work Days
Brand: Hongruntong Marine
Product Description

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.

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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