ISO Certificated Customizable Marine Rubber Airbag Ship Launching Salvage Buoyancy

Marine Rubber Airbag

Marine Rubber Airbag is China independent intellectual property rights of innovative products, the products are mainly applied to ship launching and landing, weight lifting, handling, installation of underwater buoyancy aid etc. Nowadays, Marine rubber airbags are widely used in the world. The Products are less limited by space, no large mechanical equipment, can shorten the working period and save the unnecessary cost. Through years of development practice, marine rubber airbag is become more safety, effective and green environmental protection.

Marine Rubber Airbags are designed using principle of rolling wood. "Henger" marine rubber airbags choose the whole intertwine technology to make rubber airbags on the structure more reasonable, has higher safety coefficient and bearing capacity.

High quality marine rubber airbags are commonly used for projects in the heavy industry and marine shipbuilding sector.
Some of their most common uses are as follows:

Launching of 250-ton to 10,000-ton ships or boats. Sometimes even more
Launching of heavy large structures up to 10,000-tons
Hauling out of large marine structures including ships for repairs or recycle
Providing additional buoyancy for marine salvage projects or flotation needs (i.e. reducing draft of barges etc)
Mobilisation of heavy structures on land (a suitable alternative to transporters)

Technical Requirement

According to CB/T 3795--1996, marine rubber fender should meet the following requirements.

Dimensional Deviation:
Diameter & Effective Length Deviation: ±2%

Total Length Deviation: ±4%

Amount of Elastic Deformation: diameter deformation amount ≤ 5% under 1.2 times working pressure.
Safety Factor: >4.5
Air Tightness: depressurization < 5% after 1hour inflation
Surface Quality: fairing line shape, no crack, no bubble, no double skin, no impurities, no distinct dirt and other apparent defect.
Anti-explosion design of end part.

Product Advantage

1. High Bearing Capacity

Inflatable rubber airbag’s main technical requirement is regulated in CB/T 3795--1996 published by China State Shipbuilding Corporation.
Henger adopts new rubber formula and high-strength enhanced synthetic-tyre-cord layer, which improves the airbag’s bearing capacity two times more than CB/T 3795--1996 standard.

The synthetic-tyre-cord layer of Henger marine airbag adopts dipped Nylon-6 1400dtex/3-V2 tyre cord.

The strength & durability of airbag improves 20%, compared to polyester tire cord which is widely used by friendly competitors.

2. High Kneading-resistance Capability

When the airbag is rolling under the ship bottom, it will suffer a “kneading force” from ship bottom and ground because of not uniform rolling speed, which could case problems like delamination, layer buckling, etc.

Henger improved the manufacturing technique and raw material formula to strengthen kneading-resistance capability of the airbag and avoid worse accident .

Each layers of airbag are painting with specially formulated mucilage to dissolve dust & impurities.

The specially formulated mucilage

also higher the adhesiveness among each layers to guarantee the air tightness.

While most of friendly competitors cut this process in production to save manufacturing cost.

3. New Anti-explosion Design of End Part

The possibility of air leakage in the joint area of metal part and rubber part is also increasing as working pressure of airbag is added. After using for times under high working pressure, the airbag would burst and metal part would hurt workers.

Henger invented new anti-explosion design of the airbag end part, increasing the bonding strength and air tightness between rubber body part and end metal part. Henger airbag is working very well under higher working pressure without potential safety hazard.

4. High strength galvanized anti-release structure

casting metal part with chemlok coating.

chemlok coating strengthens the bonding between metal part and rubber body after vulcanization.anti-release structure of the metal part makes the connection more tight.

Contact information:
Angus Zhang
Tel: +86-15794525751
E-mail:angus@hengergroup.com;