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ISO 1722:1974

Current Revision

Rock drilling -- Extension drill-steel equipment for percussive long-hole drilling -- Reverse-buttress-threaded equipments 1 1/2 to 2 1/2 in (38 to 64 mm)

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 1722
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 82
Publish Date Document Id Type View
Not Available ISO 1722:1974 Revision