QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.
| Payment Terms | T/T |
| Supply Ability | 10pcs/per week |
| Delivery Time | 2~3 weeks |
| Packaging Details | Pallet or Plywooden Box |
| Product Name | Marine Rubber Airbags |
| Size | Customized Size |
| Factory Standard | ISO 14409:2011 |
| Application | Ship launching, ship landing, marine salvage, heavy lifting, etc. |
| Diameter (D) | 0.5 ~ 3m, or customized diameter |
| Effective Length (EL) | 1 ~ 30m, or customized length |
| Production Time | 7-14 Days |
| Reinforcement | Tire cord layers |
| Customized | Available |
| Structure | Outer rubber layer, synthetic-tyre-cord layer, inner rubber layer |
| Designed Lifes san | 7~10 years |
| Model of Airbags | QP-ordinary, QG-high-bearing, QS-superhigh bearing |
| Loading Capacity | 10 ~ 40 ton/m, or customized capacity |
| Brand Name | DOOWIN MARINE |
| Model Number | QG6 |
| Certification | SGS, BV, CCS, ABS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 10pcs/per week |
| Delivery Time | 2~3 weeks | Packaging Details | Pallet or Plywooden Box |
| Product Name | Marine Rubber Airbags | Size | Customized Size |
| Factory Standard | ISO 14409:2011 | Application | Ship launching, ship landing, marine salvage, heavy lifting, etc. |
| Diameter (D) | 0.5 ~ 3m, or customized diameter | Effective Length (EL) | 1 ~ 30m, or customized length |
| Production Time | 7-14 Days | Reinforcement | Tire cord layers |
| Customized | Available | Structure | Outer rubber layer, synthetic-tyre-cord layer, inner rubber layer |
| Designed Lifes san | 7~10 years | Model of Airbags | QP-ordinary, QG-high-bearing, QS-superhigh bearing |
| Loading Capacity | 10 ~ 40 ton/m, or customized capacity | Brand Name | DOOWIN MARINE |
| Model Number | QG6 | Certification | SGS, BV, CCS, ABS, LR |
| Place of Origin | China | ||
| High Light | 4 Layers Marine Rubber Airbags ，12 Layers Marine Rubber Airbags ，Marine Rubber Airbags Customized | ||
Ship launching airbags, also known as roller bags, launching air balloons, inflatable marine airbags, air lift bags, and salvage bags, are specialized marine rubber air bags used for launching marine vessels, ship landing or haul-outs. These airbags are widely used in loading, floating, lifting and moving sunken ships, and salvaging stranded boats.
Ship launching using marine airbags is an innovative technology that overcomes the disadvantages of traditional methods like "end-on launching", "side ship launching", and "float-out". This flexible technology eliminates the restrictions of fixed launching tracks and is increasingly adopted by shipyards worldwide due to its advantages in time savings, cost efficiency, flexibility, and safety.
Our engineering team continuously innovates in design, material usage, and manufacturing technologies to ensure flexibility, safety, and reliability. Our ship-launching rubber airbags have been used to launch cargo vessels, barges, chemical tankers, tugboats, AHTS vessels, floating docks, and construction caissons, with the largest vessel launched reaching 100,000DWT.
All Doowin Marine ship launching airbags are manufactured and tested to fully comply with ISO 14409:2011 (Ships and marine technology -- Ship launching airbags) and ISO 17682:2013 (Methodology for ship launching utilizing air bags).
| Specification | Details |
|---|---|
| Place of Origin | Shandong, China |
| Product Name | Marine salvage rubber airbag |
| Brand Name | DOOWIN |
| Diameter | 0.5~3m |
| Length | 5~30m |
| Production Technology | Holistic wrapping technology |
| Advantages | High lifting capacity, long lifespan |
| Standard | ISO 14409 |
| Working Pressure | 7~500kPa |
| Life-span | 10 years |
| Material | Synthetic-tire-cord layer |
| Layers | 4-12 layers |
| Certificate | SGS, BV, CCS, ABS, LR, BV |
| Others | Any size available upon request |
Our rubber airbags are constructed with an outer rubber layer, multi-layer synthetic-tire-cord layers, and inner rubber layer vulcanized firmly, with additional layers applied at the end shoulders for enhanced durability.
The synthetic-tire-cord layer serves as the reinforcement layer, made of rubber-coated synthetic-tire-cord fabrics. Multiple layers are twined at ideal angles using our patented Holistic Wrapping Technology to evenly distribute stress and hold internal pressure. We use 1400 dtex/2 or 1400 dtex/3 type synthetic-tire-cord fabric with over 95 cords per 100mm width and breaking strength exceeding 310N per cord.
1400 dtex/2 - 215 N/ per cord 1400 dtex/3 - 313 N/ per cord
Both outer and inner rubber layers undergo rigorous testing to meet international standards. The outer rubber layer protects cord layers from abrasion and external forces, featuring compounds with excellent tensile and tear strength to withstand harsh weather conditions and heavy usage.
| No. | Test Item | Value | Standard |
|---|---|---|---|
| 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, % (70℃±1℃,22h) | ≤30 | ISO 815-1 |
| 6* | 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 at 40℃ x 96h, extension 20% | No crack | ISO 1431-1 |
| Type No. | Diameter (m) | Initial Internal Pressure for Test (kPa) | Rated Working Pressure (kPa) | Bearing Capacity at 70% compress deformation (KN/m) | Minimum Burst Pressure (kPa) |
|---|---|---|---|---|---|
| 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 | |
| 2.0 | 14 | 80 | 176 | 240 | |
| QG6 | 0.8 | 56 | 245 | 215 | 740 |
| 1.0 | 45 | 200 | 219 | 600 | |
| 1.2 | 32 | 165 | 217 | 490 | |
| 1.5 | 25 | 130 | 218 | 390 | |
| 1.8 | 20 | 110 | 220 | 330 | |
| 2.0 | 18 | 100 | 220 | 300 | |
| QG7 | 0.8 | 64 | 270 | 237 | 810 |
| 1.0 | 50 | 220 | 242 | 660 | |
| 1.2 | 38 | 190 | 251 | 570 | |
| 1.5 | 29 | 150 | 247 | 450 | |
| 1.8 | 25 | 130 | 257 | 390 | |
| 2.0 | 23 | 120 | 264 | 360 | |
| QG8 | 0.8 | 70 | 300 | 264 | 900 |
| 1.0 | 54 | 240 | 264 | 720 | |
| 1.2 | 45 | 210 | 277 | 630 | |
| 1.5 | 32 | 170 | 280 | 510 | |
| 1.8 | 29 | 150 | 297 | 450 | |
| 2.0 | 26 | 140 | 308 | 420 |
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
3000000-5000000
Employee Number:
60~80
Ecer Certification：
Verified Supplier
Doowin Marine is a professional manufacturer of ship launching airbags, pneumatic rubber fenders, foam-filled fenders, inflatable pipe plugs, and offshore foam buoys. Doowin Marine is the leading manufacturer of ISO 14409:2011 or CB/T 3795 rubber airbags/marine inflatable airbags. Marine rubber airb... Doowin Marine is a professional manufacturer of ship launching airbags, pneumatic rubber fenders, foam-filled fenders, inflatable pipe plugs, and offshore foam buoys. Doowin Marine is the leading manufacturer of ISO 14409:2011 or CB/T 3795 rubber airbags/marine inflatable airbags. Marine rubber airb...
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