Qingdao Luhang Marine Airbag and Fender Co., Ltd. is one of the leading manufacturers and suppliers of airbags for lifting boats in China. We warmly welcome you to wholesale customized airbags for lifting boats at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.
Airbags for lifting boats
A airbags for lifting boats based on the Log-Rolling method uses soft rubber for lifting and carrying. It is an innovative product with independent intellectual property rights in China, widely applied in heavy lifting, ship launching and outfitting, sunken box lifting, and buoyancy aids for underwater engineering. Airbags for lifting boats are not restricted by space or heavy machinery, effectively shortening construction time and saving significant costs.
Contact Person: Fairy Fan
Email:Fairy@luhanggroup.com
Tel:+86 19063952909
Whatsapp/WeChat:+86 19063952909
Application
1. Ship Launching and Outfitting
After more than 20 years of development in China, airbags for lifting boats have proven to be the most reliable and stable technology for ship launching and outfitting. They are suitable for huge vessels ranging from flat-bottomed ships to 10,000-tonnage ships. Foreign shipyards, dockyards, and port construction companies have widely recognized marine rubber airbags. The technology of ship launching and outfitting with rubber airbags is also strongly promoted in markets such as America, Europe, Southeast Asia, and others.
2. Lifting and Moving
Airbags for lifting boats can be used for lifting, lowering, moving, and transporting sunken boxes in port construction works.
3. Buoyancy Salvage
Due to the buoyancy and load-bearing capacity of airbags for lifting boats, they are frequently applied in wreck salvage and buoyancy rescue operations.
Specification
| Diameter | Safe working pressure | Work high | The bearing capacity | |
| KN/M | T/M | |||
| 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 | ||
| D=2.0M | 0.08MPa | 1.2m | 100.65 | 10.26 |
| 1.1m | 113.21 | 11.54 | ||
| 1.0m | 125.76 | 12.82 | ||
| 0.9m | 138.32 | 14.1 | ||
| 0.8m | 150.88 | 15.38 | ||
| 0.7m | 163.43 | 16.66 | ||
| 0.6m | 175.99 | 17.94 | ||
Here are the advantages of Airbags for lifting boats
1. High Load-Bearing Capacity
The key technical requirements for Luhang Marine's rubber airbags comply with ISO 14409 "Ships and Marine Technology - Ship Launching Airbags".
The synthetic tire cord layer of Luhang marine's airbag for lifting boats is made of 1480dtex/2 Chinlon tire cord, offering 40% higher strength and durability compared to polyester tire cord.
2. High Torsion Resistance
During the ship launching process, airbags are subjected to "torsional forces" from the ship's hull and the ground due to uneven rolling speeds, which may cause delamination, layer deformation, or other issues. Luhang has optimized the production process and raw material formulation to enhance the airbags' torsion resistance and prevent severe accidents.
Each layer of the airbag for lifting boats is coated with a specially formulated adhesive to remove impurities and dust.
The adhesive also improves interlayer adhesion to ensure airtightness.
3. New Explosion-Resistant End Metal Parts Design
As the operating pressure of airbags increases, the risk of air leakage at the interface between metal parts and the end rubber body rises. Repeated use under high pressure may cause airbags to burst at metal parts, endangering nearby workers or equipment.
Luhang has invented explosion-proof design for airbag ends, improving the bonding strength and airtightness between the rubber body and end metal parts. Luhang Marine's airbags for lifting boats operate safely even under high pressure without potential safety hazards.
4. Structural Configuration Optimization
Luhang developed a strength and intensity model to test pressure performance, stress intensity, and direction. Through multiple tests, the stress variation law was identified, and the structural configuration was optimized. The optimized airbag successfully passed burst tests and has proven effective in practical applications.
Hydraulic burst testing is a comprehensive extreme test for airbags for lifting boats, evaluating performance, materials, structure, and manufacturing processes.
Luhang Marine's airbag for lifting boats test results exceed industry standards.
Hydraulic Spray Test for Luhang Ship Airbags*: Tested by a U.S. client and a third-party inspection institution.
5. Excellent Wear Resistance & High Aging Resistance
Airbags operate in harsh conditions, such as prolonged sunlight, seawater corrosion, and contamination. Their surfaces must be highly resistant to wear, aging, and corrosion.
Luhang's airbags are made of natural rubber with a special composition and unique manufacturing techniques, ensuring reliable performance under the above rough conditions.
6. Higher Flexibility and Shock Absorption
Luhang's airbags are produced using a unique monolithic winding process, featuring uniform wall thickness and no secondary seams at overlapping joints. The flexible airbag helps reduce structural stress and launching risks when the ship rolls on slopes or uneven channels.
-Significant deformation may cause airbag layers to separate, leading to severe accidents.
Luhang Marine's airbags have never experienced dangerous deformations (as shown in the left photo) during ship launching
Project Cases
Summary of advantages
Our advantage
1. Real airbag manufacturers. The company covers an area of 40,000 square meters, from rubber refining to vulcanization, the factory does not require external processing. Can fully control the production process, quality.
2.Rubber formula suitable for air bag products, our company has 30 years rubber formulator, according to the season, humidity adjustment formula. Summer will increase the specific gravity of materials such as carbon black and maintain the hardness and wear resistance of the air bag. The rubber properties are tested once each time the formula is adjusted, and the rubber properties are tested once every 7 days when the formula is unchanged. Other manufacturers' formulations are easy to doping recycled rubber, our company's air bags do not use recycled rubber, all use excellent natural rubber, butadiene rubber, styrene butadiene rubber.
3. The rubber performance exceeds the international standard 20%. The air bag is made of high quality rubber, which can increase the wear resistance and improve the service life. Our company produces airbags, the basic service life of 15 years. It can achieve small wire damage, and the wear time measured is 66% longer than that of other manufacturers.
4. The rubber sheet needs to be kept clean, and every piece of material in our company will be cleaned and used again. Because the rubber mixing and calendering are carried out in the company, the storage time of raw materials can be controlled.
5. The raw material is not used for more than 7 days to ensure the performance of rubber. The rubber sheet is prone to self-sulfur when the temperature is high, and eventually the air bag will delamination.
6. The balloon wall is pressurized to become a whole. The air bag is pressurized after forming, so that the sheet becomes whole. Vulcanization process using high pressure vulcanization temperature difference < 2℃. Our company promises never to use low temperature and low pressure vulcanization process.
7.The inspection area of our company can test 20 airbags of 20 meters in length at the same time, and require full inspection of the factory, once the problem is detected, it will be repaired or re-produced. Export airbag quality problems, long transportation cycle, high cost, the impression of the project.
8.The company with insufficient production area has no space for inspection and chooses not to inspect the shipment. Vulcanization process outsourcing enterprises directly in the vulcanization without inspection directly packaging
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