This standard specifies the terms and definitions, classification and basic parameters, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation, and quality commitments of hydraulic cylinders for forklifts (hereinafter referred to as hydraulic cylinders). This standard applies to single- and double-acting hydraulic pumps equipped with forklifts that use hydraulic oil or other mineral oils with equivalent performance as the working medium. The working medium temperature range is -20 ℃ ~ 95 ℃, and the operating ambient temperature range is -20 ℃ ~ 50 ℃. cylinder.