98F78003000000 is a precision aviation maintenance tool compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine fuel and hydraulic pipeline maintenance.It functions as a high-precision pipeline crimping tool, specialized in crimping aviation pipeline fittings during MRO assembly and repairs. It delivers uniform, controlled crimping force to form tight, leak-proof connections between pipelines and fittings, preventing fluid leakage that may cause system failure, fire hazards or operational risks during flight.Made of high-strength chrome-vanadium alloy steel with heat treatment, it resists wear and deformation, working stably at -55℃ to 200℃. Weighing 0.52kg, its ergonomic compact design suits narrow engine bays, enabling precise one-step crimping. It is a critical tool to standardize pipeline connections and ensure the safety and reliability of aircraft fuel and hydraulic systems.