Active standard | Published: 24/01/1991

ISO 722:1991-ed.3.0

Rock drilling equipment — Hollow drill steels in bar form, hexagonal and round
(Matériel de forage des roches — Barres creuses, hexagonales et rondes pour fleurets)

Available languages: English, French

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 722:1991-ed.3.0

Publication date: 24/01/1991

Pages: 2

Country: International technical standard

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Anotation

Description / 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).

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