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ISO 1722:1974, 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)
🇺🇸 United States
ISO 1722:1974, Rock drilling -- Extension drill-steel equip…
By: ISO TC 82
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ISO 1721:1974, Rock drilling -- Extension drill-steel equipment for percussive long-hole drilling -- Reverse-buttress-threaded equipments 1 1/16 and 1 1/4 in (27 and 32 mm)
🇺🇸 United States
ISO 1721:1974, Rock drilling -- Extension drill-steel equip…
By: ISO TC 82
View Details