Fuel accessories are precision-engineered components with dimensions of 100x280x400mm, made from robust materials including SKD11, SKD61, D2, SKS5, P20, DC12, and DH6. Designed to an ultra-high precision of 0.001mm and achieving a hardness of HRC 58-60, these parts are processed using advanced techniques such as CNC machining, wire cutting, EDM, and deep hole drilling. To enhance performance and durability, they undergo specialized surface treatments like nitriding, carburizing, annealing, normalizing, quenching, and tempering, ensuring they meet the stringent requirements of fuel system applications.