Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
{"title":"Length 5m-30m Ship Launching Marine Airbags Customized With Nylon Rubber Inner","imgUrl":"https:\/\/img.chinax.com\/nimg\/db\/ea\/43f1dde8b6b3869c67726c2976d7-200x200-1\/length_5m_30m_ship_launching_marine_airbags_customized_with_nylon_rubber_inner_material.jpg","attrs":{"Brand Name":"DOOWIN MARINE","Model Number":"QG6","Place of Origin":"China","Minimum Order Quantity":"1pc"}}
{"title":"High Strength Marine Air Bag Customized Inflatable Air Bags For Shipping","imgUrl":"https:\/\/img.chinax.com\/nimg\/8f\/f3\/cc7e2e7c2cf52900ec07c60b7d7d-200x200-1\/high_strength_marine_air_bag_customized_inflatable_air_bags_for_shipping.jpg","attrs":{"Brand Name":"DOOWIN MARINE","Model Number":"SL-1","Certification":"BV,ABS, CCS, SGS","Place of Origin":"China"}}
{"title":"Rubber Vulcanizer Boat Lift Air Bags Ship Launching \/ Landing Airbag","imgUrl":"https:\/\/img.chinax.com\/nimg\/2f\/9f\/90b9f5b25535edb01cad23745762-200x200-1\/rubber_vulcanizer_boat_lift_air_bags_ship_launching_2f_landing_airbag.jpg","attrs":{"Brand Name":"DOOWIN MARINE","Model Number":"QG8","Place of Origin":"China","Minimum Order Quantity":"1pc"}}
{"title":"OEM Inflatable Marine Salvage Lift Bags For Ship Launching \/ Landing \/ Salvage","imgUrl":"https:\/\/img.chinax.com\/nimg\/83\/b7\/d7d2a236956c4564908bc5b7dceb-200x200-1\/oem_inflatable_marine_salvage_lift_bags_for_ship_launching_2f_landing_2f_salvage.jpg","attrs":{"Brand Name":"DOOWIN MARINE","Model Number":"QG6,QS10,QS12,ect.","Certification":"CCS,ABS,LR,BV","Place of Origin":"China"}}
Marine Rubber Rollers Bags, Ship, Vessel and Barge Drydocking Airbags (Balloon) for Launching and Haul out
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 heavy-duty rubber airbags are widely used in loading, floating, lifting, and moving sunken ships, as well as salvaging stranded boats.
Ship launching using marine airbags represents 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 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 continuous innovation in design, material usage, and manufacturing technologies ensures the highest levels of 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 100,000DWT.
Launching Air Bags Type and Model
Ship Launching airbags are categorized by bearing capacity per meter in length, with the number of synthetic-tire-cord layers determining the Safety Working Pressure:
QP - Ordinary airbag with 3, 4, or 5 cord fabric layers
QG - High-bearing capacity airbag with 6, 7, or 8 layers of cord fabric
QS - Superhigh-bearing capacity airbag with 9, 10, or more layers of cord fabrics
Example model: QG6/1.5x15 QG6: 6 layers of cord fabric + 1 rubber layer 1.5:Diameter is 1.5m 15: Effective length is 15m
Structure of Ship Launching Airbags
Rubber airbags are constructed with an outer rubber layer, multiple synthetic-tire-cord layers, and an inner rubber layer vulcanized firmly together, with additional layers at the end shoulders for reinforcement.
Synthetic-tire-cord layer
This reinforcement layer consists of rubber-coated synthetic-tire-cord fabrics twined at ideal angles using patented "Holistic Wrapping Technology" to evenly distribute stress and maintain 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.
Inner and Outer Rubber
Both rubber layers undergo rigorous testing to meet international standards. The outer layer protects cord layers from abrasion and environmental factors, featuring compounds with exceptional tensile and tear strength for harsh conditions.
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).
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
Ship Launching Airbags Performance Parameters
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
Why Our Ship Launching Airbags ?
Superior Manufacturing & Quality Control Processes from the selection of raw materials to the highly skilled production process.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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...
