GOST 23677-1979 Hardness testing machines for metals. General technical requirements
GOST 2405-1988 Pressure gauges, vacuum gauges, pressure-and-vacuum gauges, draught gauges and draught-and-pressure gauges. General specifications
GOST 3647-1980 Abrasives. Grain sizing. Graininess and fractions. Test methods
GOST 3722-1981 Rolling bearings. Balls. Technical requirements
GOST R 52381-2005 Abrasive materials. Grain and grain size distribution of grinding powders. Test of grain size distribution
GOST R 52710-2007 Abrasive tools. Acoustic method for determination of hardness and sound indices by reduced acoustic wave velocity*， 2023-12-23 Update
ISO 525:1999 Bonded abrasive products - General requirements
GOST R 52587-2006 history
2006GOST R 52587-2006 Abrasive tools. Designations and hardness test methods