ISO 1721:1974 PDF

Original price was: $43.00.Current price is: $33.54.

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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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

1974

Published Date

1974

Published By

International Standardization Organisation

Page Count

6

ISO 1721:1974 PDF
$43.00 Original price was: $43.00.$33.54Current price is: $33.54.