From the development of construction machinery in recent years, the development of excavator is rapid, excavator has become one of the most important construction machinery in construction. Excavator fuel tank and hydraulic tank are the key products of excavator hydraulic system. The harsh working environment and complex hydraulic control system of the excavator put forward strict requirements on the sealing, volume and cleanliness of the fuel tank and the hydraulic tank of the machine. Jinli Machinery has carried out a lot of technical research on the sealing, cleanliness and surface coating treatment of excavator oil tank products according to the actual working conditions of excavators. The internal and external plates of the excavator fuel tank and the hydraulic tank adopt U-shaped molding, and the robot welding is selected after welding, which reduces the labor intensity of workers, improves the welding efficiency and weld quality, so as to meet the multi-directional needs of customers. Every year, Jinli Machinery provides tens of thousands of high quality, stable and qualified excavator fuel tank products for various brand engineering manufacturers.