XINZ Upgrades High-Pressure Rotary Joints For 30+ Multi-Brand Aircraft Refuelers At Guangzhou Baiyun Airport

The project covered a diverse fleet including domestic leader Shanghai Chengfei and high-end German brand KUNZ, with some vehicles integrating advanced fluid control systems from Fluid Transfer. This achievement marks a solid step forward for Baiyun Airport in enhancing the intrinsic safety levels of its aviation fueling infrastructure.

Project Background: Challenges at a Critical Hub

As one of China's three major gateway composite hubs, Guangzhou Baiyun Airport handles immense flight density and complex fueling logistics. Apron operations subject refueling trucks to rigorous conditions, including high-frequency rotation, high-pressure impacts, temperature fluctuations, and chemical corrosion. As the vital "joints" connecting fixed pipelines to flexible hoses, the performance of rotary joints directly dictates the safety and efficiency of fuel delivery.

The 30+ vehicles involved in this maintenance campaign represented a complex mix of models and technical origins. The fleet ranged from domestic workhorses like Shanghai Chengfei to precision-engineered German KUNZ tankers, alongside units featuring Fluid Transfer components. Significant variations in flange standards, pressure ratings, and installation spaces across these different brands posed substantial challenges for parts adaptation and execution.

Technical Breakthrough: Precision Adaptation for Multi-Brand Fleets

Facing the "East-West hybrid" nature of the mixed fleet, the Xiamen XINZ technical team rejected a "one-size-fits-all" approach, opting instead for a refined, customized service protocol:

One-on-One Mapping & Customization: Technicians conducted precise measurements of interface dimensions, bolt hole patterns, and flow channel parameters for every vehicle's old joints. Whether adapting to Shanghai Chengfei's national standard interfaces, KUNZ's strict German piping systems, or the unique structures of Fluid Transfer-equipped units, XINZ ensured perfect matching for all newly manufactured rotary joints, eliminating stress concentrations caused by dimensional deviations.

High-Performance Material Upgrade: All replaced rotary joints feature bodies made of high-strength carbon steel or stainless steel, paired with aerospace-grade Fluorocarbon Rubber (FKM) seals. These new products offer superior resistance to corrosion from Jet A-1 kerosene and Sustainable Aviation Fuel (SAF), maintaining excellent sealing performance in extreme temperatures ranging from -40°C to +120°C-perfectly suited for Guangzhou's humid climate and potential cold snaps.

 

 

Core Value: Fortifying Safety Defenses Across Seven Dimensions

This large-scale renewal was more than a simple parts replacement; it was a strategic initiative to fulfill aviation fuel operation safety responsibilities. According to the project assessment, the new joints will deliver profound impacts across seven key dimensions:

Fortifying the Safety Bottom Line: Completely eliminates drip risks caused by aging seals in old joints, cutting off fire and explosion hazards at the source to protect aircraft and personnel.

Ensuring Compliance: Fully meets the "zero leakage, zero damage" mandatory requirements of the International Civil Aviation Organization (ICAO) and the Civil Aviation Administration of China (CAAC), facilitating smooth safety audits.

Enhancing Operational Efficiency: The low-torque, high-flow design of the new joints significantly improves fueling flow stability, reducing refueling time per aircraft and supporting on-time performance.

Reducing Comprehensive Costs: Prevents chain-reaction damages such as hose twisting and pump failures caused by joint faults, significantly lowering the total lifecycle maintenance costs of the fleet.

Extending Equipment Lifespan: Superior vibration resistance and wear performance reduce the operational load on the entire fuel transmission system, significantly extending the service life of precision vehicles.

Practicing Green Responsibility: Prevents aviation fuel leakage into soil and groundwater, supporting Baiyun Airport's construction as a "Green Airport" and fulfilling environmental social responsibilities.

Protecting Employee Health: Creates a working environment free from oil vapor and slip hazards for frontline refuelers, embodying a people-centric management philosophy.

Client Feedback and Future Outlook

Relevant officials from Guangzhou Baiyun International Airport spoke highly of the project results. The successful delivery of this project stands as another milestone in XINZ's deep cultivation of the aviation ground support sector.

Looking ahead, XINZ will continue to uphold the philosophy of "Safety First, Quality Supreme," providing more professional and efficient fuel system solutions for major airports across China and contributing strength to the nation's civil aviation power.