Specifies 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.
Status: PublishedPublication date: 1974-09
Edition: 1Number of pages: 6
Technical Committee: ISO/TC 82 Mining
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