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ISO 1720:1974

Rock drilling — Extension drill-steel equipment for percussive long-hole drilling — Rope-threaded equipments 1 1/2 to 2 in (38 to 51 mm)

Jul 1, 1974
95.99 Withdrawal of Standard   Jan 1, 1991

General information

95.99     Jan 1, 1991

ISO

ISO/TC 82

International Standard

73.100.30  

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Life cycle

NOW

WITHDRAWN
ISO 1720:1974
95.99 Withdrawal of Standard
Jan 1, 1991

REVISED BY

PUBLISHED
ISO 10207:1991

PUBLISHED
ISO 10208:1991