Qingdao Luhang Marine Airbag and Fender Co., Ltd. is one of the leading manufacturers and suppliers of launching airbags usually used in singapore, malaysia and thailand in China. We warmly welcome you to wholesale customized launching airbags usually used in singapore, malaysia and thailand at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.
What is Airbag?
As a category of inflatable elastomeric engineering apparatus, marine launching airbags are predominantly deployed in niche maritime operations: these include the streamlined launching of watercraft from shipyards or dockyards into navigable waters, vessel dry-docking for maintenance purposes (the process of transferring vessels from aquatic environments to shore-based facilities), maritime salvage missions (for instance, the hoisting and refloating of stranded watercraft), as well as the short-haul conveyance of oversized, heavy-lift payloads.
When pressurized with air, these airbags generate substantial supportive force and buoyancy; leveraging their distinctive rolling mechanism, they effectively mitigate frictional resistance during operation. This unique working principle enables the secure, versatile, and cost-effective execution of shipbuilding workflows, vessel upkeep routines, and contingency maritime operations alike. As such, they stand as indispensable auxiliary gear within the shipbuilding and maritime engineering domains.
What can Airbag be used?
In their uninflated configuration, collapsible cylindrical airbags are affixed to the undersurface of a vessel's hull. Upon full inflation, these specialized devices generate robust buoyant force to hoist the vessel aloft, thereby eliminating impediments that would otherwise impede the launch by clearing the area beneath the hull. Subsequent to this elevation step, the airbags situated at the vessel's stern undergo partial deflation, after which a moderate thrust is exerted on the hull. Such constitutes the core operational mechanism underpinning the airbag-assisted vessel launching technique.
Vessel launching is widely acknowledged as a highly intricate undertaking within the shipbuilding industry. For inland watercraft and coastal vessels alike, two primary launching methodologies prevail: rail-borne slipway launching and airbag-roll launching. The former necessitates the construction of purpose-built slipways or docking facilities, with its prohibitive implementation costs confining its utilization exclusively to large-scale shipyards. By stark contrast, marine airbags have garnered extensive acclaim among small and medium-sized shipyards, attributable to their minimal upfront capital expenditure and broad spectrum of applicability.
Presently, this airbag-centric launching technology is extensively deployed for vessel launching and berthing operations across a multitude of Asian and American countries. Empirical data indicates that upwards of 80% of newly constructed vessels with a deadweight tonnage of under 60,000 metric tons rely on marine airbags for their launch. The hallmark advantage of this methodology lies in its unparalleled adaptability: any level terrain with a gentle incline can be repurposed as an impromptu launching pad. Furthermore, marine airbags are even proficient in facilitating vessel launches from riverbanks or seacoasts that stand one to two meters above the waterline.
Marine Airbags Material and Structure
The marine vessel-launching airbags manufactured by Luhang feature a sophisticated five-functional-rubber-membrane architecture. Fabricated via a proprietary full-wrap lacing technique, these airbags boast a seamless cylindrical main body and hemispherical end caps, eliminating structural weak points caused by bonded joints.
Dual Rubber Layers (Exterior & Interior): The outer rubber sheath serves as a robust barrier, shielding the internal structural layers from abrasive wear and external mechanical impacts. Endowed with exceptional tensile and tear resistance, this outer layer ensures prolonged durability even under harsh operational conditions.
Synthetic Tire-Cord Reinforcement Plies: Strategically oriented at optimal angles, the synthetic tire-cord reinforcement layers are engineered to withstand intense internal inflation pressure while facilitating uniform stress distribution across the entire airbag surface, thereby delivering superior structural reinforcement.
Integrated End Fittings Assembly: This assembly incorporates an airtight rotary connector and a safety inflation port. Geometrically, the airbag comprises a cylindrical main body and two tapered end caps, each fitted with metal bushings and inflation plugs to enable rapid, secure air charging.
For a detailed breakdown of the airbag's structural configuration and component specifications, please refer to the attached engineering drawing below.
Why Choose us and Marine Airbags?
We are a leading professional manufacturer of marine airbags with over 20 years of experience. With mature technology, experienced workers and strict quality control, we guarantee high-quality airbags, especially in air tightness. Here's the production flow.
We are a credible company making marine air bags with optimized rubber material, various sizes and layers. ISO certified with many product patents. Airbags are inspected and approved by third parties like BV, SGS, V-Trust, etc., with excellent high pressure and airtightness performance.
Size and Performance of our Marine Airbag
Version with Major Rewriting & Specialized Vocabulary
Marine vessel-launching airbags are fully customizable in terms of dimensional specifications and ply configurations, tailored precisely to the hull dimensions, displacement tonnage, and the specific hydrodynamic conditions of launching or docking operations.
Effective Length: The optimal span of an airbag is recommended to match the vessel's beam, or alternatively, to be truncated by one meter relative to the hull's breadth. Our fabrication scope encompasses airbags with lengths ranging from 5 meters up to 24 meters, accommodating the full spectrum of small crafts to large seacraft.
Diameter: The caliber of the airbag is contingent upon the vessel's scale and the operational exigencies of the project. Bulker vessels and large freighters necessitate airbags of augmented diameters, while compact watercraft can be serviced by diminutive-sized airbags. In scenarios involving hull cleaning or dry-docking maintenance, airbags with larger calibers afford ample maneuvering space for technicians, optimizing their operational comfort and efficiency. For large-tonnage vessels, diameters of 1.5 m, 1.8 m, 2 m, or 2.5 m are adjudged as the most viable specifications.
Ply Count: A higher stratification of rubber plies directly correlates with enhanced load-bearing resilience. To hoist a vessel to a predetermined elevation, a sufficient array of airbags with adequate ply ratings must be deployed. For the majority of standard maritime engineering undertakings, 6-ply airbags suffice to meet the requisite load demands. Nevertheless, for ultra-stringent operational scenarios that mandate heightened performance metrics - such as hoisting heavyweight caissons with constrained contact interfaces, which entails elevated inflation pressure and additional plies to uphold operational integrity and safety - airbags with 7 to 8 plies may be imperative.
The judicious selection of marine airbags constitutes a pivotal determinant in the fruition of maritime engineering endeavors. Acquainting oneself with the rudimentary tenets of airbag selection protocols and soliciting bespoke counsel from seasoned manufacturers can expedite project culmination within the most condensed timeframe feasible.
Enclosed herein is a tabulation delineating the load-bearing capacities of airbags across a gamut of dimensional specifications.
改写说明
| Size | Diameter | 1.0m, 1.2m, 1.5m, 1.8m, 2.0m, 2.2m, 2.5m, 2.8m, 3.0m |
| Effective Length | 6m, 10m, 12m, 15m, 18m, 20m, 22m, 24m, etc | |
| Layers | 4 layers, 5 layers, 6 layers, 8 layers, 10 layers, 12 layers |
| Model | Dia | Effective Length | Overall Length | Cord Layer | Rubber Plate | Thickness | Working Pressure | Bursting Pressure | Lifting Height | Bearing Capacity | |
| M | M | M | Layer | Layer | mm | MPa | MPa | M | Ton/meter | Ton/airbag | |
| LH-6 | 1.2 | 12 | 14 | 6 | 1 | 7.2 | 0.17 | 0.75 | 0.90 | 7.85 | 94.20 |
| 1.00 | 5.23 | 62.76 | |||||||||
| 1.10 | 2.62 | 31.44 | |||||||||
| LH-7 | 1.5 | 15 | 17 | 7 | 1 | 8.2 | 0.16 | 0.70 | 1.00 | 12.21 | 183.15 |
| 1.10 | 9.77 | 146.55 | |||||||||
| 1.20 | 7.33 | 109.95 | |||||||||
| 1.30 | 4.89 | 73.35 | |||||||||
| LH-8 | 1.8 | 18 | 20.5 | 8 | 1 | 9.2 | 0.15 | 0.67 | 1.20 | 13.96 | 251.28 |
| 1.30 | 11.63 | 15.12 | |||||||||
| 1.40 | 9.31 | 167.58 | |||||||||
| 1.50 | 6.98 | 125.64 | |||||||||
| 1.60 | 4.65 | 83.70 | |||||||||
| LH-10 | 2.0 | 20 | 23 | 10 | 1 | 11.2 | 0.17 | 0.75 | 1.30 | 18.32 | 366.40 |
| 1.40 | 15.70 | 21.98 | |||||||||
| 1.50 | 13.09 | 261.80 | |||||||||
| 1.60 | 10.47 | 209.40 | |||||||||
| 1.70 | 7.85 | 157.00 | |||||||||
Please do not hesitate to contact us for any inquiry.
. In case you are not sure of the suitable sizes and sufficient layers of a launching project or ships, you are welcome to consult us for information. You need provide us with following information:
-Ship size: breadth (width) and Length
-Ship weight: weight of vessel without cargo is better
-Lifting height: the maximum height to lift the ship from the ground
-The slipway condition: the declining angel, the ground condition etc
Roy
Sales Manager
QingdaoLuhang Marine Airbag and fender Co.,Ltd
Whatsapp：+86 19063952969
email：roy@luhanggroup.com
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