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| 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 |
| Company Info. |
| Hongruntong Marine LLC. |
| Verified Supplier |
| View Contact Details |
| Product List |
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 Name | Underwater Air Lift Bags |
| Raw Material | TOP-Grade PVC Coating Fabric |
| Type | Pillow |
| 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 | Capacity | Length | Width | |
|---|---|---|---|---|
Pillow | [kg] | [lbs] | [mm] | [mm] |
| HM-P100 | 100 | 220 | 1,020 | 760 |
| HM-P250 | 250 | 550 | 1,320 | 820 |
| HM-P500 | 500 | 1,100 | 1,300 | 1,200 |
| HM-P1000 | 1,000 | 2,200 | 1,550 | 1,420 |
| HM-P2000 | 2,000 | 4,400 | 1,950 | 1,780 |
| HM-P3000 | 3,000 | 6,600 | 2,900 | 1,950 |
| HM-P5000 | 5,000 | 11,000 | 3,230 | 2,030 |
| *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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