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ISO 1720:1974Withdrawn

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

Forage des roches — Matériels pour forage percutant de longs trous — Équipements à filetage corde 1 1/2 à 2 in (38 à 51 mm)

This edition has been replaced by ISO 10207:1991, ISO 10208:1991.

Abstract / scope

No abstract published for this document yet.

Life cycle

Replaced by

ISO 10207:1991PublishedRock drilling equipment — Rope threaded drill steel equipment for percussive drilling, nominal sizes 22 mm to 38 mmInternational Standard · Published 24 Jan 1991 · ISO/TC 82ISO 10208:1991PublishedRock drilling equipment — Left-hand rope threadsInternational Standard · Published 24 Jan 1991 · ISO/TC 82