Air Tight Marine Salvage Airbags For Conveniently Moving Caissons

Conveniently Floating and Moving Caissons Rubber Marine Salvage Airbags

Thanks to marine airbags’ heavy duty lifting ability, they are capable to transport heavy objects such as caissons in short distance on land by lifting the heavy objects and rolling them forward. In some cases, they are used to move heavy objects to on water by floating them. Concrete caissons are usually transported with marine airbags.

The other application of marine airbags is marine salvage of sinked vesses underwater by refloating them up. Firstly calculate the necessary buoyance to float a vessel up. Use a number of airbags in suitable sizes, binding them alongside the vessel sides or setting them into the cabinets. Inflate the airbags to displace the water and float the vessel up slowly.

Qingdao Luhang is a leading and professional manufacturer of marine salvage airbags. They are widely used in salvaging sinked vessels or ships or refloating large and heavy objects from underwater. They are also called salvage air bags, salvage balloons, refloating airbags, refloating air bags or refloating balloons. They will be equipped with bondage belts or cord net around them and fixed around the shipes or heavy objects. After inflation, the salvage airbag has certain buoyance to displace the water and float the sinked vessels up to the water. The selecion of airbags is based on the salvage requirement: the vessel weight, size and how to fix. The airbags can be made maximum to Dia 3m and 24m long.

The buoyance of some airbags of different sizes

Maine Features of Marine Salvage Airbags

1. Flexbile for different salvaging projects in sizes and buoyance adjustment

2. Saving Cost: airbags can be used repeated

3. Heavy Duty: salvage airbags are capable to bear high pressure because they are made of multi-layers reinforced with nylon cords. They can be used more than 10m under water.

4. Equipped with necessories such as inflation pressure gauge, bondage belts, shackles for fixing.

The Construction and Material of Marine Salvage Airbags

The airbag wall is constructed with layers of rubbers plates. The inner layers are reinforced with nylon cord net. These layers support the airbag with bearing strength when the airbag is inflated. More layers the airbag wall has, greater strength the airbag has. And the nylon cord net plays a critical role in strength. Besides the cord reinforced layers, there is one extra layer without cord net outside the wall. This rubber layer has a function of anti-wear and anti-aging. To maximize the function of the inner layers and the exterior layer, the rubber material is specially optimized with suitable mixing formulas.

The Pictures of Marine Salvage Airbags and the Salvage Site

Initially established as Qingdao Luhang Marine Airbag Factory in 1988 and changed to Qingdao Luhang Marine Airbags and Fenders Co.,Ltd in 2011, Qingdao Luhang had been devoted itself to developing and manufacturing marine airbags and marine fenders for more than 2 decades.

The factory area is 56,000m² with building area of  21,000m². The company has registered capital of USD 3 million and fixed asset of USD1.2 billion. We have a full line of production equipment: rubber mixing machine, rubber roller machine, the China biggest vulcanization tanks, the biggest Press Inspection Machine, EVA foam processing machine, Foam shaping machines and SPUA spraying machine.

Through these years' development, we have full range of marine airbags and marine fenders:

Ship Launching Airbags for ship launching and docking in shipyards

Marine Salvage Airbags for salvaging sinked vessels or refloating objects from under water

Other Airbags for special usage

Pneumatic Rubber Marine Fenders for ships and docks berthing

Foam Filled Marine Fenders for ship and docks berthing

Fixed Dock Rubber Fenders for docks and wharfs

Marine Buoys

From the begginning we have been focusing on technological innovation. With a team of experienced technicans and engineers, we have developed some high tech marine products and got some petents. We have been approved as a supplier of Navy products. 

Quality is our life line. We provide service of “three guarantees” (returning, repairing and replacing) on all our products in case of any defects due to the problems of material,manufacturing, performance under conditions of normal operation and maintenance.