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Made By Natural Rubber Boat Lift Air Bags , Inflatable Marine Airbags
1. INTRODUCTION
Marine Rubber Airbag is china independent intellectual property rights of innovative products, the products are mainly applied to ship launching and landing, weight lifting and moving, installation of underwater buoyancy aid to salvage sunken vessels etc. Airbags launching technology was developed based on traditional slipway launching mode, it overcomes the restrictions of traditional slipway launching mode. Our marine rubber airbags are less limited by space, no large mechanical equipment, can shorten the working period and save the unnecessary cost. Through years of development practice, our products are become more safety, effective and green environmental protection and they can launching a ship up to 100,000 DWT. Nowadays, Marine rubber airbags are widely used in the world.
2. AIRBAG STRUCTURE & MATERIAL REQUIREMENTS
2.1 Airbag Structure
"XINCHENG" Marine Rubber Airbags' structure is consists of the outer rubber layer synthetic cord reinforced rubber layers and inner rubber layer.
Its shape characteristics: central body cylindrical + tapered on both ends.
Cord layers: 4,5,6,7,8,9,10, layers
Accessories: Pressure gage, Inlet valve, Pipe fitting and seal end ring.
2.2 Material
No | Test item | Required value | Test method | |
1 | Tensile strength,MPa | ≥18 | ISO 37 | |
2 | Elongation at break, % | ≥400 | ISO 37 | |
3 | Hardness, °(Shore A) | 60±10 | ISO 7619-1 | |
4 | Tear Strength, N/cm | ≥400 | ISO 34-1 | |
5 | Compression set, %(70ºC±1ºC, 22h) | ≤30 | ISO 815-1 | |
6 | After thermal ageing at 70ºC±1ºC, 96h | Holding of pull lengthening, % | ≥80 | ISO 188 |
7 | Holding of elongation at break, % | ≥80 | ISO 188 | |
8 | Change of hardness,°(Shore A) | ≤8 | ISO 7619-1 | |
9 | Static ozone aging test at 40ºCx96h [ozone concentration(50±5)x10-8],extension 20% | No crack | ISO 1431-1 |
Figure 2. Synthetic-tyre-cord
3. SIZE AND SPECIFICATION
Standard size of Marine Rubber Airbags:
Diameter (D): 0.8m-2.0m
Effective length (EL): 6.0m-18m
Total Length (TL): 7m-20m
Cord layers: 4,5,6,7,8,9,10, layers
Diameter(m) | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | |
Medium Pressure (4-5) | Test Pressure | 0.14-0.16 | 0.12-0.14 | 0.10-0.12 | 0.08-0.10 | 0.07-0.09 |
Working Pressure | 0.12-0.14 | 0.10-0.12 | 0.08-0.10 | 0.07-0.09 | 0.06-0.08 | |
High Pressure (6-8) | Test Pressure | 0.22-0.26 | 0.20-0.24 | 0.15-0.20 | 0.13-0.16 | 0.12-0.15 |
Working Pressure | 0.20-0.24 | 0.17-0.22 | 0.13-0.18 | 0.11-0.14 | 0.10-0.13 |
NOTE: Other size of airbags are also available follow customer's request.
4.PACKAGING AND SHIPMENT
Packaging:
All of airbags can be folded and then bundled up.
Storage: