ISO 1721:1974
ISO 1721:1974 Rock drilling – Extension drill-steel equipment for percussive long-hole drilling – Reverse-buttress-threaded equipments 1 1/16 and 1 1/4 in (27 and 32 mm)
CDN $82.00
Description
Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.
Edition
1
Published Date
1974-08-01
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: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.
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