
ROCK DRILLING - FORGED COLLARED SHANKS AND CHUCK BUSHINGS FOR HOLLOW HEXAGONAL DRILL STEELS
出版:International Organization for Standardization

专家解读视频
This International Standard specifies the dimensions of forged collared shanks for hollow hexagonal drill steels in bar form for rock drilling, which comply withISO722.
UNE 22652 : 1985 - Identical
SNV NF EN 20273 : 1992 - Identical
UNE 22652 : 1985 - Identical
SNV NF EN 20273 : 1992 - Identical