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ISO 722:1991

Rock drilling equipment -- Hollow drill steels in bar form, hexagonal and round

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Abstract

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).

 

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Related standards

Standards in the same category (77.140.60)
Standards in the same category (73.100.30)
Standards from the same committee

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