ISO 1722:1974 Preview

Rock drilling -- Extension drill-steel equipment for percussive long-hole drilling -- Reverse-buttress-threaded equipments 1 1/2 to 2 1/2 in (38 to 64 mm)

Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: size of drill-steel in bar form; lengths of extension rods; coupling sleeves; bit diameters (four-wing bits); reverse-buttress threads; hollow hexagonal bars for extension rods.


General information

  • Current status : Published
    Publication date : 1974-09
  • Edition : 1
    Number of pages : 6
  • :
    ISO/TC 82
    Mining
  • 73.100.30
    Equipment for drilling and mine excavation

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