The hydraulic system is the main equipment of the blast furnace of the steel mill. And the system provides the required power for the actuator required for the transportation of the billet into the furnace door. The design fully considers the influence of factors such as steel plant high temperature, water quality conditions, dust, vibration, noise, etc., and the structure is reasonable to ensure that there is no leakage. Also, it has the characteristics of high quality, high reliability and easy maintenance, long service life and low maintenance cost. Ensure the accuracy and reliability of the customer's equipment throughout the life cycle.