As the global shipbuilding industry accelerates its transition toward greener, smarter, and more efficient operations, the demand for safe and reliable equipment for critical processes such as ship launching, ship shifting, and heavy marine handling continues to grow.
Located at the heart of Qingdao’s shipbuilding industrial cluster, Qingdao Sunkai Marine Supplies Co., Ltd. has long specialized in the R&D and manufacturing of marine airbags, delivering national-standard, factory-direct solutions to shipyards and marine operators worldwide.
By anchoring its production strictly to Chinese national standards and international certifications, and by eliminating intermediaries through a factory-direct supply model, Sunkai has established itself as a practical and trusted supplier in the global marine equipment market.
Marine airbags are widely regarded as the safety foundation of ship launching and shifting operations, with their quality directly affecting personnel safety, vessel integrity, and operational efficiency.
At Sunkai, standardized production is embedded into every stage of manufacturing.
From raw material selection, the company adopts high-strength synthetic fiber cord fabric combined with aging-resistant rubber composite materials, ensuring both structural strength and corrosion resistance fully comply with GB/T 33487-2017 and ISO 14409 standards.
Inside the production facility, key technical parameters are strictly controlled:
Vulcanization temperature maintained between 150–160°C
Cord fabric overlap width not less than 50 mm, in full accordance with technical specifications
Full-process documentation from rubber mixing to final forming, enabling complete quality traceability
Before delivery, every marine airbag undergoes multiple mandatory inspections, including:
A 24-hour airtightness test, with pressure loss controlled within 5%
Burst pressure testing, ensuring sufficient safety margins between working pressure and failure limits
These procedures effectively prevent substandard products from entering the market and provide shipyards with dependable operational assurance.
Leveraging its self-owned production base, Qingdao Sunkai operates under a factory-direct sales model, eliminating distributor markups and passing real cost advantages directly to customers.
To meet different operational demands, the company offers a comprehensive range of marine airbag specifications, including:
Diameters from 0.8 m to 2.0 m
Effective lengths from 6 m to 10 m
These marine airbags are suitable for:
Small and medium-sized vessels in the thousand-ton range
Heavy-duty ship launching for ten-thousand-ton merchant ships
Offshore engineering platforms and complex marine operations
With stable performance and reliable load-bearing capacity, Sunkai marine airbags are widely used across major Chinese shipbuilding regions such as the Bohai Rim and the Yangtze River Delta, while also gaining strong recognition in Southeast Asia, the Middle East, and other Belt and Road markets. They play a critical role in ship launching, ship maintenance, dismantling operations, and maritime rescue.
“Making every maritime operation safe and efficient” remains the core mission of Qingdao Sunkai.
According to company representatives, Sunkai will continue aligning with the high-quality development trend of the shipbuilding industry by investing in material innovation and process optimization.
Future development will focus on:
Improving the load-bearing capacity of marine airbags
Extending cyclic service life for repeated operations
Enhancing customized solutions, with airbag parameters adjusted according to specific vessel and project requirements
Providing full-chain support, from technical consultation and selection guidance to after-sales maintenance
By combining national-standard quality control with factory-direct supply advantages, Qingdao Sunkai is committed to delivering more competitive marine airbag solutions to global shipyards and marine operators—supporting safer operations and contributing to the sustainable development of the global marine economy.
