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

Standard No.

SIS SS-ISO 722:1991

Release Date

1991

Published By

SE-SIS

Latest

SIS SS-ISO 722:1991

Scope

This International Standard specifies the dimensions of hexagonal and round drill steels in bar form used for rock drilling.

SIS SS-ISO 722:1991 history

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