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Totally Enclosed Air Lifting Bags 2018-05-08T14:49:30+00:00

Chinese Top Quality, World-Class Quality Standard

Totally Enclosed Underwater Air Lifting Bags

DOOWIN totally enclosed underwater air lifting bags is one kind of cylindrical shape fully enclosed lifting bags, known as salvage pontoon, inflatable buoyancy units, or buoyancy bags. 

Totally enclosed underwater air lifting bags are mainly used for buoyancy support and marine salvage and refloatation operation in shallow water. We also can use enclosed lifting bags as support/salvage pontoons for bridges, floating platforms, dock gates,  sunken objects or military equipment. Totally enclosed underwater air lifting bags offer an effectual method of reducing the draught of vessel and floating underwater structures. Then also provide an ideal system of buoyancy for cable or pipeline and static buoyancy support.

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Physically Proven Safety Factor
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Maximum Capacity Water Bag

Totally Enclosed Underwater Air Lifting Bags Specification

Totally enclosed underwater air lifting bags have commercial lifting bags and professional lifting bags. The standard color is yellow. The orange color is available upon request. Refer the below pictures, we also can design and supply upon clients’ request, and special projects.

Totally enclosed air lifting bags specification

Note: Gross Weight is shipment weight after package with all accessories. The above specification only for your reference. We maybe change its size without notice. 

Proven in Practice

Hundreds of Successful Load Testing Projects

Your Safety is Our Mission!

DOOWIN water bags were sold to more than 30 countries. Total capacity reach 50,000 ton.

Totally Enclosed Air Lifting Bags Features & Advantages

Our totally enclosed underwater air lifting bags are made of heavy duty PVC coated fabrics SGS certificated. Top quality with the competitive price make DOOWIN totally enclosed underwater air lifting bags as the first choice.

–    Made of heavy duty PVC coated polyester fabric
–    All seams are RF welded, no glue use
–    Fold compactly for easy efficient storage
–    3/4” B.S.P air inlet stainless/brass ball valves
–    Certificate webbing harness (with 6:1 SF) terminate with end shackles
–    Equipped with Automatic Pressure Relief Valves
–    Horizontal resistant belts used to connect each lifting belts
–    Design Safety Working Factor 5:1 at least
–    Complete with “Operation and Maintenance Manual” and mill certification
–    Manufactured and Tested comply with IMCA D016, certificated by ABS, LR, BV
–    ABS, LR, BV third party certificate is available upon request
–    Spreader beam is available upon request too.
–    Equipped with all necessary accessories, delivered ready for use
–    Custom sizes and types available upon request

Totally Enclosed Air Lifting Bags Constructions

DOOWIN totally enclosed underwater air lifting bags are cylindrical shaped units, fabricated from heavy duty polyester cloth coated with PVC. Our totally enclosed air lifting bags are completely equipped with the appropriate quantity of automatic pressure relief valves. It can open when pressure reach rated valves. Certificated heavy duty polyester webbing with end shackles, and air inlet stainless/ brass ball valves are equipped for the lifting operation. Each totally enclosed underwater air lifting bag is complete and ready for use when leaving our manufacturing facility.

Totally Enclosed Air Lifting Bags Application

–    Suitable for shallow water usage
–    Military equipment
–    Bridge buoyancy supports
–    Inflatable Pontoons
–    Marine salvage and refloatation
–    Extra buoyancy for pipe and cable float out operations

DOOWIN Totally Enclosed Underwater Air Lifting Bags

Chinese Unique Professional Manufacturer

DOOWIN Totally enclosed air lifting bags are designed and tested comply with IMCA D016.
Its safety factory is over 5:1. We only SGS certificated PVC coated fabric material for lifting bags.
The enclosed lifting bags are certificated by BV, ABS, LR third party organization.
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ABS Inspection Certificate

ABS inspection certificated

BV Inspection Certificate

BV Inspection Certificate

LR Inspection Certificate

LR inspection certificate

Professional Cast Quality

Excellent quality water bags and reliable service, they deliver exactly what they agree to and perfectly on time.

Stephen Barnett, MODEC (Singapore)

Awesome to use DOOWIN buoyancy bags for our Aramco project. Its quality completely can be comparable with UK products.

Dr.Chen, China Harbour (Aramco Project)

We have confident with DOOWIN. They can help us with innovative solution, well prepared to accommodate to our request.

Hugo Silva (Project Manager), McDERMOTT

Please feel free to contact our professional team!

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Email: sales@doowin-dooflex.com

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