SIST ISO 722:1997 PDF
Rock drilling equipment -- Hollow drill steels in bar form, hexagonal and round
Rock drilling equipment -- Hollow drill steels in bar form, hexagonal and round
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 августа 1997 г.
- ICS:
- 73.100.30
- Технический комитет:
- IRUD - Mining
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).
Abstract
Overview
SIST ISO 722:1997 is an international standard developed by the International Organization for Standardization (ISO) that specifies the dimensions for hollow drill steels used in rock drilling equipment. This standard covers hollow drill steels in bar form, both hexagonal and round shapes, used primarily for mining and construction applications. The third edition of updates and replaces the 1985 edition by expanding the range of sizes and including hollow round drill steels for the first time.
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