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)

Automatically translated name:

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)

STANDARD published on 1.8.1974

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Format	electronic design (pdf) - 62.20 USD Print design - 62.20 USD
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62.20 USD

The information about the standard:

Designation standards: ISO 1721:1974
Publication date standards: 1.8.1974
SKU: NS-427512
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: International technical standard
Category: Technical standards ISO

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The category - similar standards:

Equipment for drilling and mine excavation

Annotation of standard text ISO 1721:1974 :

Description / 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.