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Chinese National Standard Category: Grinding material and apparatus

English Title: Super-hard abrasive Micro powder of man-made diamond and borazon
Chinese Title: 超硬磨料 人造金刚石微粉和立方氮化硼微粉
Standard No.: JB/T 7990-1998
Category No.: J43
Issued by: Ministry of Machine Building
Issued on: 1998-07-17
Implemented on: 1998-12-1
Status: superseded
Superseded by:JB/T 7990-2012 Superabrasive - Synthetic Diamond and Cubic Boron Nitride Micropowder
Superseded on:2012-11-1
Abolished on:
Superseding:JB/T 7990.1~7990.4-1995
Word Count:4000 words
Similar Standards: GB 2478-1983   GB 11271-1989   GB 2479-1983   GB/T 2490-2003   GB 11274-1989   GB 11272-1989   GB/T 2488-2001   GB/T 16458-2021   GB/T 2487-2001   GB 9256-1988   GB/T 2485-1997   GB/T 2493-2023   GB/T 16457.2-2023   GB/T 23538-2023   GB/T 43323-2023   GB/T 2484-2023   GB/T 43136-2023   GB/T 43131-2023   GB/T 43134-2023   GB/T 16457.1-2023  
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