Google+ Marine airbag also called shipping launching shipping airbag
Add: Wenfeng Bei Yuan 11# 604, Nantong, Jiangsu, China P.O.: 226006
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Product Center > Rubber Balloon for Launching > Air Bag for Shipping > Marine Airbag
Marine Airbag
Marine Airbag


Marine Airbag

 Marine airbag, also called air lifting bag, air balloon, inflatable bags, roller bags, air lift bags, salvage bags.

Yutung's factory is the inventor of first marine airbag, and sets the standard in the industry for high performance and usage technology. Now, marine airbag (Intense pneumatic tire) are widely used in ship launching and landing, sunken ships salvage and refloatation, heavy lifting and conveying.
Ship launching or upgrading depending on marine airbag is an innovative technology having utmost bright prospect in shipbuilding. Now the Flexible Launching Technology is full of mobility, with advantages such as saving effort, saving time, saving work load, saving investment, flexible, safe, reliable, and outstanding benefit, etc. The technology of apply air gasbag to the launching and landing of ships overcomes the restrictions of traditional slide board technology which is commonly used in building small or medium size ships.
After years of practice and accumulation of experience, we have developed this technology from facilitating the launching of only 1,000 DWT ships to current 55,000 DWT ships. And now this technology has become into a flexible, promising, secure and mature technology. Besides that, these airbags are widely used in upgrading of ships and boats of all sizes. 

Construction Features:

Marine airbag, basic body consists of which consist of our rubber layers, synthetic-cord-reinforced rubber layers, are kind of a cylindrical airbags with hemispherical heads at the both ends. All of these are vulcanized together, and then compress air inside to enable in to roll.
1. Outer Rubber
The outer rubber layer of marine airbag that covers the outside of launching airbags protects the cord layers from abrasion and other external forces. This compound has sufficient tensile and tear strength to withstand any weather condition and hard usage. Standard color is black.
2. Synthetic - tire -cord layer of marine airbag for reinforcement
The reinforcement cord layers, which are made of Synthetic-tire-cord commonly used in tires, are arranged at ideal angles to hold the internal pressure and to distribute the stress evenly providing strong efficient reinforcement.
3. End Fittings
End fittings of the marine bag include air tightness swivel and airbags safety air inlet.


1. The standard specification of marine airbag.
You can choose the required diameter and effective length to meet your projects.
*Diameter (D)              : It is from 0.8m to 2.0m.
*Effective Length (EL): It is from 6 m to 18 m.
*Total Length (TL)      : It is from 7 m to 19.5m
The above specification only is our standard specification arrange. Other specification also can be supplied upon clients' request.
2. The standard number of layers
We define the number of layer, which means the number of Synthetic  - tire - cord layer, in order to confirm the Safety Working Pressure. Normally, our airbags include 4, 5, 6, 7, 8 layers types. Other type of marine fender is available upon clients' request.
3. The material of  marine airbag
There're two kinds of synthetic-tire-cord because of the different performance.
1400 dtex/2
1870 dtex/2
Break Strength
N/ strand
over 215.6
over 284.2
0.65 +/- 0.05
0.74 +/- 0,05
Adhesion Strength
over 137.2
less 156.8
 We define the suitable  marine airbag as per the above 3 items.
Such as: Ship launching airbags D1.5m x EL 15m+ TL17m YT-6, 1870D
In here:
1. D 1.5m: the diameter is 1.5m
2. EL 15m: the effective length is 15m
3. TL 17m: the total length is 17m
4. YT-6: the number of Synthetic-tire-cord layer is 6 layers
5. 1870D: the type of Synthetic-tire-cord layer is 1870.

Features and Advantages of Marine airbag:

Unique whole enlacing technology
Excellent material selection as per ISO 17357
Cost effective, long service life
Guaranteed quality and safety
Free consult and design project
Laboratory and field test
Commission and technical directing service
Well proven design and performance
0.7 Mpa hydraulic blasting utmost
After service for lifetime


In order to confirm the correct specification of air-bags, we hope you can considering the following questions:
1.   Type of vessel?
2.   LOA (length) of ship?
3.   Width of vessel?
4.   Vessel's actual launched weight (gravity weight)/weight without cargo?
5.   What is the vessel's DWT?
6.   Type of ground ship is built on? (Dirt, concrete, etc.) *Provide photo.
7.   Depth in meters of the water where the ship first enters the water?
8.   What's the angle degree of slipway? (Land, not under water)
9.   Please provide the low/high tide schedule at site.
10. The working height? (The block stand height under the vessel)
11. Distance from bottom of propeller to the water level?
12. Distance from back of vessel (in dry dock) to the water entry point?

Other Type Marine airbag:

Hoisting Airbags, Moving Airbags
The combination of hoisting airbags and moving airbags can have the capability of lifting and transporting heavy objects of over 10,000 ton., They are being widely used in moving extra heavy objects such as large scale reinforced concrete structure, oi, l drilling equipment, whole building structure and etc.
Besides that, these airbags are widely used in upgrading and launching of ships and boats of all sizes. Our engineers have implemented several inventions in their practice and successfully launched caisson directly into water with just using airbags. Furthermore, they have accomplished unprecedented tasks with relocating world's largest cylinder caisson and caissons with weight of up to 5,000 metric ton.
Floating Airbags, Filling Airbags
Floating airbags are very small in size while deflated. Thus, they can be easily transported and deployed when space is an issue and under water conditions. We can provide the exact floating ton capability based on clients requirements. The floating airbags have flexible applications and can be broadly implemented in shipwreck salvaging, floating bridge and dock construction. It is also being use as temporary marine transportation device.
It's better than underwater air-lifting bags.

Main Application Field of Air-bags

Shipbuilding Industry:
Upgrading and launching of ships; shipwreck salvaging; ships collision avoidance

Hoisting and Moving Industry:
Lifting and transporting of heavy weight objects.

Building Industry:
Pneumatic core moulding use in building industry.

Logistics and Warehousing Industry:
Gas and Liquid of airbags containers.

Airline Industry:
Airplane overhaul airbags, fuel tanker and emergency slide way.

Marine Industry:
Deep sea breeding net cage, offing fence.

Emergency rescue and disaster relief industry:
Fight floods and stop leakage, moving the ruins.

Military Affairs industry:
Self-saving for field operation vehicles, floating bridge, aquatic pipeline, dropping off oil tanker, naval ships protection.

Public Security:
Marine airbag shelter partition for blasting

Test and Quality:

Yutung Management System is certified ISO 9001-2000 and follows each order during manufacturing procedures. Yutung guarantees high standards and performances of all products. Customer requirements are strictly followed during all production phases. Yutung relevant departments assure a procurement control on the raw and basic materials. All airbags are manufactured in accordance with CB/T 3795.
Our factory are very focused on the quality. We have most advanced inspection equipment in China. 100% airbags should be tested and inspected as per the requirement of CB/T 3795. Non conformed products are immediately rejected by Quality Control. The widely usage have been tested under rough condition. Our many satisfied customers are out best reference.

Marine fender from Yutung industrial, your best choice.

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