DIAMOND CORE DRILLING REFERENCE - Boart LongyearExplore further
Drilling Parameters - Q™ Triple Tube Size NQ™3, NQ™TT HQ™3, HQ™TT PQ™3, PQTT Speed (rpm) 950 750 600 Indicative Bit Weight Range Imperial Measurement Low (lbf) 3,000 5,000 7,000 High (lbf) 8,000 12,000 18,000 Metric Measurement Low (kN) 14 20 32 High (kN) 36 54 80 Fluid Flow Range Imperial Measurement Low (gpm) 10 15 22 High (gpm ...
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