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ISO 1722:1974
ISO 1722:1974 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)
CDN $76.00
Description
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.
Edition
1
Published Date
1974-09-01
Status
PUBLISHED
Pages
6
Language
English
Format
Secure PDF
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Abstract
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.
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