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ISO 722:1991

Rock drilling equipment — Hollow drill steels in bar form, hexagonal and round ISO 722:1991

Publication date:   Jan 24, 1991

General information

90.93 Standard confirmed   Dec 6, 2022

ISO

ISO/TC 82 Mining

International Standard

73.100.30   Equipment for drilling and mine excavation | 77.140.60   Steel bars and rods

Buying

Published

Language in which you want to receive the document.

Scope

Specifies the dimensions for seven nominal sizes. This third edition cancels and replaces the second edition (1985), which has been technically revised (addition of round drill steels and extension of the range of sizes).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 722:1985

NOW

PUBLISHED
ISO 722:1991
90.93 Standard confirmed
Dec 6, 2022