JB/T 58652-1999 This standard is a revision of JB/T 58652-93 "Quality Grade Assessment of Fastener Product Varieties". This standard stipulates the principles and methods for the variety quality grade assessment of various fastener products produced in accordance with national standards and industry standards. Fasteners produced according to other standards can also be used as a reference when assessing the quality grade of fastener products. This standard is applicable to the quality grade assessment of fastener product varieties. This standard was first published on the year, month and day.
JB/T 58652-1999 history
1999JB/T 58652-1999 Quality grade assessment of fastener products