Underwater Lift Bags Lightweight Buoyancy Bag for Subsea
Construction Projects
Description
Underwater lift bags are essential buoyancy devices designed for
lifting, recovering, and transporting submerged objects in marine
environments. Manufactured using heavy duty, coated nylon or PVC,
these bags provide controlled and efficient buoyancy for operations
such as salvage, underwater construction, offshore maintenance, and
military recovery. Our lift bags come in various designs, including
open bottom, enclosed, and pillow-type bags, catering to different
lifting requirements. Equipped with reinforced load bearing straps,
stainless steel hardware, and automatic overpressure relief valves,
they ensure safe and stable ascent. With over 30 years of
manufacturing expertise, we produce high-quality, durable, and
internationally certified lift bags that perform reliably in harsh
underwater conditions.
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
Wide Range of Buoyancy Capacities
Available in various sizes, from 50 kg to over 50,000 kg, our lift
bags cater to small-scale recovery tasks and large offshore lifting
projects, offering versatility for different applications.
Lightweight, Compact, and Easy to Transport
Our lift bags are foldable and lightweight, allowing for easy
transportation, storage, and rapid deployment, making them ideal
for emergency salvage and professional diving operations.
Certified and Industry Compliant
Our products meet or exceed IMCA, ABS, Lloyd’s Register, and DNV
standards, ensuring reliable performance and compliance with global
marine industry safety regulations.
Versatile Applications Across Industries
Ideal for marine salvage, offshore construction, shipwreck
recovery, pipeline installation, and military operations, our lift
bags are trusted by professional divers, salvage experts, and
offshore engineers worldwide.
Applications
● Underwater cable deployment
● Oil and gas equipment recovery
● Military underwater recovery missions
● Harbor and dock maintenance
● Bridge construction support
● Subsea construction projects
Advantages
Over 30 Years of Manufacturing Expertise
With three decades of experience, we have developed
industry-leading technology and production capabilities, ensuring
high-quality and reliable lift bags.
High Quality, Durable Materials
Our lift bags are made from heavy-duty, coated nylon or PVC,
offering superior resistance to abrasion, UV exposure, and
saltwater corrosion for long-lasting performance.
Advanced Safety Features
Equipped with automatic overpressure relief valves, our lift bags
prevent overinflation, ensuring safe and controlled lifting
operations in any underwater environment.
Wide Range of Buoyancy Capacities
We manufacture lift bags with capacities ranging from 50 kg to over
50,000 kg, making them suitable for various underwater
applications, from small scale recovery to large industrial
lifting.
FAQ
1. What are the key advantages of your lift bags?
Our lift bags feature high-strength materials, reinforced straps,
overpressure relief valves, and compliance with global safety
standards.
2. What sizes and buoyancy capacities do you offer?
We offer lift bags ranging from 50 kg to over 50,000 kg of buoyancy
capacity.
3. What materials are used in your lift bags?
Our lift bags are made from heavy duty, coated nylon or PVC,
ensuring abrasion, UV, and saltwater resistance.
4. Are your lift bags resistant to saltwater and UV exposure?
Yes, they are designed to withstand harsh marine environments for
long-term durability.
