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“ISO 721:1991 Rock drilling equipment – Integral stems” has been added to your cart. View cart
ISO 722:1991
ISO 722:1991 Rock drilling equipment – Hollow drill steels in bar form, hexagonal and round
CDN $76.00
Description
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).
Edition
3
Published Date
1991-01-24
Status
PUBLISHED
Pages
2
Language
English
Format
Secure PDF
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Abstract
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).
Previous Editions
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