
Marine Vessel Launching Air Bag Length 10m to 20m Boat Pulling Airbags
Products introduction
The typical diameters of airbags are 2.6ft (0.8m), 3.3ft (1.0m), 3.9ft (1.2m), 4.9ft (1.5m), 5.9ft (1.8m), 6.6ft (2.0m) and 7.9ft (2.4m). The effective length can be specified by end user, and typical varies from 19.7ft (6m) to 98.4ft (30m), depending on the breath of the vessel bottom. The number of synthetic-tyre-cord layers can be 3 to 12, depending on the required working pressure
Rubber layers
A] The out side rubber layer that covers the outside of rubber
airbag to protect under layers from abrasion and other external
forces. This compound has sufficient tensile and tearing strength
to withstand any condition and hard usage.
B] The inside rubber layer seals pressurized air inside marine
airbags.
The cord layers are made of synthetic tire cord which commonly used
on tires, that hold the internal pressure and distribute stress
evenly. So they can provide strong efficient reinforcement for the
airbags.
Flexible balloon like an elastic cushion, it make the hull in the process of launching free pitch, keep the bottom has a larger contact area, makes the stress of the hull very ease, so that the hull structure, on the surface of the paint (coating) will not be damage.
Performance Calculation Principle of Airbags
The bearing capacity of marine air bags was calculated based on the
working pressure, contact area. Herein, working pressure was got
upon the burst pressure and safety working factor.Because of the
flexibility of marine air bag the contact area will be affected by
some terms which include the carried ship condition, the different
position from gravity center during the process of ship launching
and pulling. So the bearing capacity of air bags will vary as well
as the contact area.
Specification:
Diameter | Safe working pressure | Work high | The bearing capacity | |
KN/M | T/M | |||
D=1.0M | 0.17MPa | 0.6m | 106.93 | 10.93 |
0.5m | 133.61 | 13.62 | ||
0.4m | 160.3 | 16.34 | ||
D=1.2M | 0.14MPa | 0.7m | 110.07 | 11.22 |
0.6m | 132.04 | 13.46 | ||
0.5m | 154.02 | 15.7 | ||
0.4m | 175.99 | 17.94 | ||
D=1.5M | 0.11MPa | 0.9m | 103.79 | 10.58 |
0.8m | 121.06 | 12.34 | ||
0.7m | 138.32 | 14.1 | ||
0.6m | 155.59 | 15.86 | ||
0.5m | 172.85 | 17.62 | ||
D=1.8M | 0.09MPa | 1.1m | 99.08 | 10.1 |
1.0m | 113.21 | 11.54 | ||
0.9m | 127.33 | 12.98 | ||
0.8m | 141.46 | 14.42 | ||
0.7m | 155.59 | 15.86 | ||
0.6m | 169.71 | 17.3 |
Airbag for a long time without or reused after repair, should be light air test. Air pressure is the same value from our factory test, test the inspection personnel should be at least 3 meters away from the airbag, large area of damage after repair of air bag, should be appropriate to reduce the working pressure. In addition, the use of air bags, a the inspection should be done every year.
Luhang is China's professional manufacture of ship
launching/landing salvage rubber airbag and ship berthing fender.
Our main products are pneumatic rubber fender, rubber airbag,EVA
foam fender/buoy, solid rubber fender etc.
Qingdao Luhang Marine Airbag and Fender Co., Ltd
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.