This standard was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
PreviewSpecifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: size of drill-steel in bar form; lengths of extension rods; coupling sleeves; bit diameters (four-wing bits); reverse-buttress threads; hollow hexagonal bars for extension rods.
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Status: PublishedPublication date: 1974-09
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Edition: 1Number of pages: 6
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- ICS :
- 73.100.30 Equipment for drilling and mine excavation
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| Format | Language | |
|---|---|---|
| std 1 40 | ||
| std 2 40 | Paper |
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