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)

95.99 Withdrawal of Standard Jan 1, 1991

General information

Current stage: 95.99 Effective date: Jan 1, 1991

Originator: ISO

Owner: ISO/TC 82

Type: International Standard

ICS: 73.100.30

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WITHDRAWN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

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