DOOWIN is Chinese leading professional manufacturer of air lift bags, marine salvage airbags, and water weight bags. All underwater lift bags are fully compliant with IMCA-D-016. DOOWIN water weight bags are manufactured and tested comply with the requirements of LEEA 051. DOOWIN equip the modern professional production machine. In addition, we use the market leading material and advanced production technology to manufacture high-quality products.

Air Lift Bags

All DOOWIN underwater lift bags are designed, manufactured and tested in compliance with IMCA D016. We have various type of air lifting bags made of high-quality PVC coating fabric material with 5:1 Safety Factor.

parachute lift bag
Parachute lift bag
marine-salvage-airbags
Marine Salvage Airbags
enclosed-flotation-bags
Enclosed Flotation Bags
lift bag salvage tube
Lift Bag Salvage Tube

Water Weights

DOOWIN water weights proof load bags are manufactured with the highest quality PVC coating fabric. Our load test water filled weights bags are type certificated by drop test, which proven safety factor in excess of 6:1. DOOWIN crane test weights water bags are manufactured and tested comply with LEEA 051 Guidance, BV, LR , ABS certificated.

crane test weights bag
Water Weight Bags
low room proof load bag
Loow Room Proof Load Bag
platform load test weights
Platform Load Test Weights
crane load cell
Crane Load Cell

Pipeline Buoyancy

We manufacturer various pipeline inflatable buoyancy units for pipe laying work, cable float, hose floats. Our single point buoyancy units are drop tested with 6:1 safety factor by BV. All DOOWIN pipeline buoyancy bags are manufactured and tested in compliance with IMCA D016.

mono buoyancy units
Mono Buoyancy Units
inflatable buoyancy bag
Inflatable Buoyancy Bags
cable floats
Cable Floats
Foam buoys
Foam Buoys

Lifeboat, Davit and Gangway Water Bag

DOOWIN lifeboat testing water filled weights bags system including professional highest quality water bags, professional operation fittings, like diaphragm pump, water meter, manifold.

lifeboat testing water bag
Lifeboat Testing Water Bag
gangway load test water bag
Gangway Load Test  Bag
lifeboat davit load test
Lifeboat Davit Load Test
lifeboat filling kits
Standrad Filling Kits

Water Bladder Tanks

DOOWIN produce various collapsible bladder tanks for the potable water, non-potable water storage and oil fuel storage. Our water storage pillow tanks are made of high-quality PVC/TPU coating fabric, using HF-welding technology.

potable water tanks
Potable Water Tanks
fuel bladders
Fuel Bladders
fire fighting tanks
Fire Fighting Tanks
open top water tank
Open Top Water Tank

Other Products

DOOWIN also produce other products made of high quality PVC/TPU coating fabric material with HF welding technology, like inflatable fender, pipe plug, marine rubber airbags.

boat fender
Boat Fender
inflatable pipe plug
Inflatable Pipe Plug
marine rubber airbag
Marine Rubber Airbag
Lace-on Hawser Floats
Lace-on Hawser Floats