This standard applies to all kinds of hydraulic components for general industrial purposes with hydraulic oil (fluid) as the working medium. For hydraulic components with special purpose, it shall be stipulated separately. This standard also applies to hydraulic accessories.
GB/T 7935-1987 history
2005GB/T 7935-2005 Hydraulic fluid power.General requirements for hydraulic components
1987GB/T 7935-1987 Hydraulic fluid power--General rules of technical requirements for hydraulic components