Pajisje shpimi për gurë - Pajisje për zgjatjen e daltave shpuese për shpime me goditje në vrimë të thellë - Pajisjet e përforcuara me fileto në krah të kundërt 1 l/16 dhe 1 l/4 në (27 dhe 32 mm)
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)
Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.
Life cycle
NOW
PUBLISHED SSH ISO 1721:2009 60.60
Standard published 1 jan 2009
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English