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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)

Publication date:   Sep 1, 1974

General information

90.93 Standard confirmed   Dec 6, 2022

ISO

ISO/TC 82 Mining

International Standard

73.100.30   Equipment for drilling and mine excavation

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 1722:1974
90.93 Standard confirmed
Dec 6, 2022