ISO 722-1991 标准详情
- 标准号:ISO 722-1991
- 中文标题:凿岩钎具 六角形与圆形中空钎钢 棒材
- 英文标题:Rock drilling equipment; hollow drill steels in bar form, hexagonal and round
- 标准类别:国际标准化组织标准ISO
- 发布日期:1991-02
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).
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