HU55019-3 is a specialized aviation maintenance tool, compliant with AS9100D quality standards and FAA/EASA maintenance regulations, tailored for aircraft pneumatic and hydraulic pipeline systems.It serves as a precision pipe flaring tool, dedicated to processing standard flares on thin-walled metal pipes during MRO repairs and pipeline assembly. It ensures uniform, smooth flare shapes that meet aviation standards, avoiding poor sealing, air or oil leakage and pressure loss in critical systems.Made of high-strength chrome-vanadium alloy steel, it resists wear and corrosion, working stably at -45℃ to 180℃. Weighing 0.36kg, it has an adjustable structure for different pipe diameters and ergonomic grip, a critical tool for reliable pipeline connections and aircraft system safety.