Inflatable Ship Launching Air Bags 4-12 Layer Marine Airbag For Ship Launching
Product Details
| Pressure: | 0.05Mpa-0.4Mpa | Customization: | Available |
|---|---|---|---|
| Warranty Period: | 24 Months | Layers: | 4-12 Layers |
| Model: | Inflatable | Package: | Nude,pallet,box |
| Feature: | Tyre Cord Rubber Layer | Effective Length: | From 5m To 30m |
| Application: | Ship Launching, Heavy Lifting, Marine Salvage, Etc. | Air Tightness: | Good |
| OEM Service: | Warmly Welcomed | Logo: | Supported |
| Name: | Marine Airbag For Ship Launching | ||
| Highlight |
Inflatable Ship Launching Air Bags,4 Layer Marine Airbag For Ship Launching,12 Layer Marine Airbag For Ship Launching |
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Product Description
Ship launching airbags, also known as roller bags, launching air balloons, inflatable marine airbags, air lift bags, and salvage bags, are specialized marine rubber airbags used for launching marine vessels, ship landing, or haul-outs. These marine rubber airbags are also widely used in loading, floating, lifting, moving sunken ships, and salvaging stranded boats.

Ship launching or upgrading using marine airbags is an innovative ship-launching 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. To date, our ship-launching rubber airbags have successfully launched cargo vessels, barges, chemical tankers, tugboats, AHTS vessels, floating docks, and construction caissons, with the largest vessel launched weighing up to 100,000 DWT.
| Place of Origin: | Shandong, China |
| Product Name: | Marine salvage rubber airbag |
| Brand Name: | DOOWIN |
| Diameter: | 0.8~3m |
| 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 engineering team constantly improves the rubber airbags which are constructed of an outer rubber layer, multi-layer synthetic-tire-cord layers, and inner rubber layer vulcanized firmly. Additional layers are applied at the end shoulders for enhanced durability.

The synthetic-tire-cord layer serves as the reinforcement layer of the ship launching airbags, made of rubber-coated synthetic-tire-cord fabrics. Multiple synthetic-tire cord layers are twined at ideal angles using our unique and patented "Holistic Wrapping Technology" to hold internal pressure and distribute stress evenly.
We use 1400 dtex/2 or 1400 dtex/3 type synthetic-tire-cord fabric with warp density over 95 cords per 100 mm in width. The breaking strength exceeds 310 N per cord.

| ISO 14409: | 205 N/ per cord |
| 1400 dtex/2: | 215 N/ per cord |
| 1400 dtex/3: | 313 N/ per cord |
Prior to production, 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 a compound with exceptional tensile and tear strength to withstand harsh weather conditions and demanding 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 |

- The end of airbag body
- End flange (Q235 H.D.G)
- Sealing Washer
- Three-direction connector at the inflate end (Q235 H.D.G)
- 3/4′ Ball Valves at the inflate end (Brass)
- Hose connection at the inflate end (Q235)
- High-quality Pressure Gauge
- End plug at the tightness end (Q235 H.D.G)
Product Highlights
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