The standard hydraulic cylinder for metallurgical equipment is a series of hydraulic cylinders designed to meet the needs of the metallurgical industry. It is a unit plug double acting hydraulic cylinder with two speed ratios (ψ=1.46, ψ=2) and 13 installation forms. The installation and connection dimensions comply with the ISO6020/1-1981 standard, making it convenient for various metallurgical equipment needs to be selected. The working medium can use hydraulic oil and water ethylene glycol.