ISO 722:1991

Rock drilling equipment — Hollow drill steels in bar form, hexagonal and round

Publication date: Jan 24, 1991

General information

Current stage: 90.93 Effective date: Dec 6, 2022

Originator: ISO

Owner: ISO/TC 82

Type: International Standard

ICS: 73.100.30 77.140.60

Languages: French English

Buying

Status: Published

PDF - EC$120.40

Paper - EC$120.40

PDF and Paper - EC$240.80

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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

Revises
ISO 722:1985

NOW

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

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