Reference number
ISO 1720:1974
© ISO 2024
ISO 1720:1974
Rock drilling — Extension drill-steel equipment for percussive long-hole drilling — Rope-threaded equipments 1 1/2 to 2 in (38 to 51 mm)
Edition 1
1974-07
Withdrawn
Withdrawn (Edition 1, 1974)

General information

  • Status
     : Withdrawn
    Publication date
     : 1974-07
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 82
    ICS :
    73.100.30 
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