Recently, multiple small-and-medium-sized cargo vessels and engineering ships successfully completed airbag launching and hauling-out operations. The launching engineering projects fully utilized high-load marine rubber airbags independently developed and manufactured by Qingdao SunKai Marine Supplies Co., Ltd. (SunKai Marine). Leveraging stable performance, safe operation, and mature supporting craftsmanship, the airbags successfully accomplished the entire sequence of vessel lifting, rolling transfer, and smooth entry into the water, once again demonstrating SunKai Marine's hard-core technical strength in the shipbuilding and repair sector.
Airbag launching is currently the mainstream, highly efficient, economical, and eco-friendly launching technique for domestic small-and-medium-sized vessels. Featuring core advantages such as no requirement for fixed dry docks, flexible construction, strong adaptability, and controllable costs, it is widely applied in scenarios such as newbuild vessel launching, old vessel hauling-out for repair, and vessel shifting/transfer. The load-bearing capacity, anti-kneading ability, sealing safety, and structural stability of the airbags directly dictate the success rate and safety margin of vessel launching operations.
This launching operation strictly complied with the CB/T 3795-1996 marine airbag industry standard. At the operational site, multiple sets of SunKai high-load marine airbags were evenly arranged beneath the ship's bottom, precisely distributing the hull's deadweight. Relying on a load-bearing capacity exceeding national standards by more than 100%, the required number of deployed airbags was effectively reduced while guaranteeing operational safety, thereby simplifying construction procedures and boosting operational efficiency. Addressing the complex working conditions of repeated squeezing, twisting, and kneading during vessel launching, SunKai's new-generation airbags optimize special rubber formulations and multi-layer fiber winding processes. This drastically enhances tear and kneading resistance, effectively eliminating common construction hazards such as bag wall creasing, delamination, fiber breakage, and airbag rupture/bursting.
In terms of core safety design, SunKai airbags are equipped with a new anti-burst end sealing structure, reinforcing the joint strength between the airbag body and end fittings. This thoroughly resolves the industry safety challenge of end-part air leakage or detachment accidents under high-pressure conditions, ensuring long-term repeated use without leakage or burst risks. Meanwhile, the product utilizes mechanical modeling to optimize cord layout, precisely matching stress variation patterns during vessel rolling launch. This ensures uniform force distribution across all fiber layers to maximize structural load capacity. Paired with integrated whole-winding and low-temperature long-term vulcanization processes, the airbag wall achieves uniform thickness without spliced seams, offering superior flexibility and shock-absorption buffering performance. It perfectly adapts to complex operating sites with sloping ground or uneven terrain, buffering hull structural stress and significantly lowering vessel capsizing or collision risks.
Furthermore, SunKai marine airbags adapt to harsh marine operational conditions. Utilizing high-quality natural rubber as the core raw material combined with specialized functional additives, they feature long-term wear resistance, anti-aging properties, seawater corrosion resistance, and acid/alkali/oil resistance. Unfazed by outdoor operating environments such as sun exposure, blowing sand, and seawater immersion, their service life far exceeds that of conventional similar products, providing long-term, stable protection for routine vessel launching and hauling-out operations.
With solid product quality and mature construction adaptability, SunKai marine airbags are fully compatible with launching operations for various small-and-medium vessels, including cargo ships, engineering vessels, fishing boats, and barges. Driven by core advantages of high safety, high load capacity, high durability, and low cost, they have earned widespread recognition among domestic and foreign shipyards and marine engineering enterprises.
Looking forward, Qingdao SunKai Marine Supplies Co., Ltd. will continue to specialize in the marine rubber equipment sector, iteratively upgrading airbag manufacturing techniques and technical standards. By continuously optimizing product safety performance and application scenarios, SunKai Marine aims to empower the shipbuilding and repair industry toward efficient, safe, and green development with high-quality marine equipment, safeguarding marine engineering operations worldwide.
