Rock drilling equipment -- Hollow drill steels in bar form, hexagonal and round
This standard was last reviewed and confirmed* in 2013.
Specifies the dimensions for seven nominal sizes. This third edition cancels and replaces the second edition (1985), which has been technically revised (addition of round drill steels and extension of the range of sizes).
Document published on: 1991-01 Edition: 3 (Monolingual) ICS: 77.140.60; 73.100.30 Status: Published Stage: 90.20 (2017-01-15) TC/SC: ISO/TC 82 Number of Pages: 2
Revises: ISO 722:1985
No corrigenda or amendments available