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Marine Salvage Bags UV Resistant Abrasion Corrosion Resistant Easy Storage

Categories Underwater Air Lift Bags
Brand Name: Hongruntong Marine
Model Number: HM-UALB26
Certification: ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS
Place of Origin: China
MOQ: 1
Price: US$280-US$998
Payment Terms: L/C, T/T, D/A, D/P, Western Union, MoneyGram
Supply Ability: 2560 Pcs Per Month
Delivery Time: 5-8 Work Days
Packaging Details: Wooden Pallets, Wooden Box
Name: Underwater Air Lift Bags
Reinforcement: Nylon Fabric
Lifting Capacity: 200kg to 50 Tons
Type: Pillow
Feature: Durable and Reliable Construction
Material: TOP-Grade PVC Coating Fabric
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
Packaging: Pallets, Wooden Box
Warranty: 36 Months
Application: Salvage Operations, Underwater Construction
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Marine Salvage Bags UV Resistant Abrasion Corrosion Resistant Easy Storage

Marine Salvage Bags UV Resistant Abrasion Corrosion Resistant Easy Storage


Description


The Pillow Type Underwater Air Lift Bags are advanced inflatable lifting devices designed for precision underwater operations. These bags combine high-strength materials, robust design, and safety features to provide controlled lifting and flotation of submerged objects. Their pillow-shaped construction distributes air pressure evenly, minimizing tilting and enhancing stability during vertical ascent. Equipped with overpressure relief valves and reinforced attachment points, these air lift bags are ideal for complex salvage, construction, and emergency buoyancy tasks.


Case Study

During a recent underwater infrastructure project, a team needed to lift a 5-ton concrete beam from a riverbed at a depth of 18 meters. The engineers deployed three 2-ton Pillow Type Air Lift Bags, each carefully positioned beneath the beam. The sequential inflation technique allowed the beam to rise gradually, avoiding sudden movements that could endanger divers or damage the beam. Overpressure valves ensured safety by releasing excess air automatically. Once at the surface, the beam was stabilized and transported for further installation. This project showcased the precision, stability, and reliability of pillow-type lift bags in handling heavy, irregularly shaped objects in challenging underwater environments.


Specifications


Product NameUnderwater Air Lift Bags
Raw MaterialTOP-Grade PVC Coating Fabric
TypePillow
Size500kg, 1000kg, 5000kg 10000kg,etc
Thickness0.4-1.2mm, or as request
ColorYellow,Blue,Black,etc
Density0.33-0.9g/cm3
Safety Factor7:1
AccessoriesValve, Inflatable Tube, Repair Material
OEMWelcome
Warranty3 Years

Tolerances

+/- 0.03 on densities

+/- 0.2 mm on thickness

+/- 0 to +3mm on width

+/- 0 to +3mm on length


Model

Capacity

Length

Width

Pillow

[kg]

[lbs]

[mm]

[mm]

HM-P1001002201,020760
HM-P2502505501,320820
HM-P5005001,1001,3001,200
HM-P10001,0002,2001,5501,420
HM-P20002,0004,4001,9501,780
HM-P30003,0006,6002,9001,950
HM-P50005,00011,0003,2302,030
*Note: Other sizes can be customized according to the requirements.

Features


Exceptional Lifting Strength and Buoyancy Management
The Pillow Type Air Lift Bags offer superior lifting capacity with precise buoyancy control. Each bag is designed to distribute lifting forces evenly across its surface, reducing the risk of toppling. Sequential inflation methods allow operators to lift uneven or asymmetrical objects safely. The integrated overpressure relief valves provide an automatic safety mechanism, preventing dangerous air pressure buildup and ensuring a smooth, controlled ascent. These features make them suitable for delicate salvage operations, underwater construction, and heavy equipment recovery.


Robust and Long Lasting Construction
Constructed from reinforced PVC-coated fabric with high-strength seams, these lift bags withstand abrasion, punctures, and UV exposure. The materials are carefully selected to maintain flexibility under varying pressures and temperatures, ensuring consistent performance in harsh underwater environments. Reinforced attachment points and seams guarantee that the bag retains structural integrity during heavy lifting tasks. This durability reduces downtime, repair costs, and enhances overall operational efficiency, making these bags ideal for professional marine operations.


Versatile Deployment and User Friendly Design
These lift bags are lightweight, compact, and easy to transport, simplifying logistics for remote underwater projects. Quick-connect inflation systems and integrated harnesses allow rapid setup and precise placement. Operators can deploy bags individually or in groups to accommodate loads of different shapes and weights. This flexibility is especially valuable in underwater construction, salvage, or emergency scenarios, where conditions can change unexpectedly and fast deployment is critical.


Enhanced Safety and Operational Reliability
Safety is central to the design of Pillow Type Air Lift Bags. Overpressure relief valves, reinforced attachment points, and stable pillow shapes minimize the risk of accidents or uncontrolled movements. The high-visibility color and durable coating enhance underwater monitoring. Combined with careful deployment and controlled inflation, these safety features ensure reliable and secure lifting operations, protecting both divers and cargo.


Applications


Salvage and Recovery Operations
Pillow Type Air Lift Bags are essential for recovering sunken vessels, heavy machinery, and underwater debris. Their controlled lift and high capacity ensure objects are raised safely without causing additional structural damage.


Underwater Construction and Positioning
These lift bags assist in positioning large components such as bridge segments, pipelines, and subsea platforms. Their stability and ease of deployment enable precise maneuvering, even in challenging underwater conditions.


Emergency Flotation and Rapid Response
In emergencies, Pillow Type Air Lift Bags provide immediate buoyancy support for stranded vessels, submerged cargo, or flooded docks. Quick inflation and reliable lift capacity make them indispensable for rescue and maritime safety operations.


Why Choose Hongruntong Marine


Extensive Marine Engineering Expertise
Hongruntong Marine has years of experience delivering high-quality marine solutions. Our engineers ensure that every lift bag meets international safety and operational standards. This technical expertise guarantees products that perform reliably in demanding underwater environments.


High Quality Materials and Precision Manufacturing
We use premium PVC-coated fabrics and advanced manufacturing techniques to create air lift bags that are durable, wear-resistant, and long-lasting. Each unit undergoes rigorous testing, including pressure testing, seam inspection, and performance verification, ensuring consistent quality and operational safety.


Customized Solutions and Technical Assistance
Hongruntong Marine provides tailored solutions for unique operational requirements. Customers can choose custom sizes, buoyancy ratings, and deployment configurations. Our technical team offers guidance on optimal deployment, inflation, and safety protocols, ensuring maximum operational efficiency and minimal risk.


Proven Global Reliability
Our products have been successfully deployed worldwide in salvage, construction, and emergency operations. Clients trust Hongruntong Marine for equipment that combines safety, durability, and precise performance. By choosing us, you gain a dependable partner for critical marine projects.


FAQ


1. What depths can these bags operate at?
Pillow Type Air Lift Bags are suitable for operations up to 50 meters depth. Special models can handle greater depths with reinforced materials and safety valves.


2. Can multiple bags be used together?
Yes. Bags can be connected and deployed in groups to handle large or irregularly shaped loads safely.


3. What maintenance is required?
After each use, rinse with freshwater, dry completely, inspect seams and valves, and store in a cool, shaded location. Regular checks extend bag life.


4. Are these bags safe for fragile objects?
Yes. Controlled inflation, stable pillow shape, and sequential deployment allow lifting delicate items without damage.


5. Do you provide training or support for new users?
Hongruntong Marine offers comprehensive guidance and technical support for deployment, safety, and operation, ensuring users can operate bags safely and efficiently.


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