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ISO 722:1991 Preview
Rock drilling equipment -- Hollow drill steels in bar form, hexagonal and round
This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
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).
Buy this standard
| Format | Language | |
|---|---|---|
| Paper |
- CHF38
Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
-
Previously
ISO 722:1985
-
Now confirmed
ISO 722:1991
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