Evergreen marine rubber lifting airbagsÂ
1.Usage of Marine Airbags
Ship Launching Marine Airbags, also known as roller bags or ship launching rubber balloon, are made of heavy-duty synthetic-tire-cord layers with inner and out rubber layers in long cylindrical balloon shape. Marine Airbags for Ship Launching and Dry Docking for barge can be used for Brazil, Indonesia Shipyard especially for barges launching, pull to shore, vessels' haul out and ship landing work.
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2.Comparison with other Launch Way
Rollers Bag is a innovative ship launching technology, comparing with "end-on launching", "side ship launching", "float-out". This ship launching technology overcomes the restrictions of fixed launching track of side-launch. Ship launching airbags are accepted by more and more shipyards world wide due to its advantages of saving time, saving investment, flexible, safety. The biggest vessel launched by ship launching airbags up to 100,000 DWT.
3.Material and constructure of Marine Airbag
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4.Classification of Roller Marine Air Bags
Ship launching marine airbags are categorized by "ordinary airbags", "high-bearing capacity airbags", and "Super-high-bearing capacity airbags" according to the bearing capacity.
- QP Ordinary airbags -Â the air bag with 3, 4Â or 5Â layers of cord fabricÂ
- QG High-bearing capacity airbags -Â the air bag with 6, 7Â or 8Â layers of cord fabric
- QS Super-high-bearing capacity airbags -Â the air bag with 9, 10 or more layers of cord
The standard diameter of ship launching marine airbags (D) varies such as 0.8m, 1.0m, 1.2m, 1.5m, 1.8m and 2.0m, 2.5 meters etc. The standard effective length of air bag (EL or L) is from 6m to 26m, which should be specified by the user. Other specification ship launching airbags also can be supplied upon request.
5.Performance Parameters of Offhshore marine ships pneumatic rubber airbag
| Model | Diameter (m) |
Initial pressure (KPa) |
Rated working pressure, Pe (KPa) |
Bearing capacity (kN/m) | Minimum burst pressure (KPa) |
| QP3 | 0.8 | 25 | 130 | 114 | 390 |
| 1.0 | 18 | 100 | 110 | 300 | |
| 1.2 | 15 | 85 | 112 | 260 | |
| 1.5 | 13 | 70 | 115 | 210 | |
| QP4 | 0.8 | 35 | 170 | 149 | 510 |
| 1.0 | 25 | 130 | 143 | 390 | |
| 1.2 | 20 | 110 | 145 | 330 | |
| 1.5 | 16 | 90 | 148 | 270 | |
| 1.8 | 14 | 80 | 158 | 240 | |
| QP5 | 0.8 | 48 | 210 | 184 | 630 |
| 1.0 | 35 | 170 | 186 | 510 | |
| 1.2 | 28 | 140 | 185 | 420 | |
| 1.5 | 20 | 110 | 181 | 330 | |
| 1.8 | 16 | 90 | 178 | 270 | |
| QP6 | 1.0 | 45 | 200 | 219 | 600 |
| 1.2 | 32 | 165 | 217 | 490 | |
| 1.5 | 25 | 130 | 215 | 390 | |
| 1.8 | 20 | 110 | 218 | 330 | |
| Note: 1. Rated working pressure:±5%. 2. Compress deformation: ±2%. 3. Internal pressure is the reference value. | |||||
Prior to delivery of the ship launching marine airbags, we test every air bag .All Evergreen Maritime ship launching marine airbags are manufactured and tested comply with  ISO 14409 "Ships and marine technology - ship launching air bags certificated by CCS, LR, DNV.Â
6.examples of  marine ships pneumatic rubber airbag
7.Large factory work shop and good environment
For more information,please contact me directly:
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Ada zheng
Mob:+8617663929366
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