This standard specifies the product classification, technical requirements, inspection rules and test methods, marking, packaging, transportation and storage of cemented carbide blanks for measuring tools. This standard applies to carbide blanks for measuring tools.
GB/T 3612-1989 history
2008GB/T 3612-2008 Cemented carbide blanks for gauge blocks or measuring tools
1989GB/T 3612-1989 As-sintered hardmetal blanks used in measuring tools