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Homepage>ISO Standards>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)
download between 0-24 hoursReleased: 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)

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)

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English PDF
Immediate download
70.00 EUR
English Hardcopy
In stock
70.00 EUR
French PDF
Immediate download
70.00 EUR
French Hardcopy
In stock
70.00 EUR
Standard´s number:ISO 1721:1974
Pages:6
Edition:1
Released:1974
DESCRIPTION

ISO 1721:1974


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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