PHQ Diamond Coring Bits

Harder rock types usually requires the use of diamond bits from the higher matrix groupings.

BROKEN rock types usually requires the use of diamond bits from the LOWER matrix groupings

  • Group 100 - Coring bits for powerful high-torque drills Drill very well in extremely abrasive rock
  • Group 200 - All purpose coring bits for high load drilling Drill very well in fractured formation
  • Group 300 - Coring bits for lower powered medium load drills Drill very well in medium hard formation
  • Group 400 - Versatile durable high penetration coring bits Drill very well in changing formation
  • Group 500 - High penetration coring bits in all rock types Drill very well in fine grained hard rock

EXCESSIVE HOLE DEVIATION usually requires the use of diamond bits from the higher matrix groupings.

a Less powerful DRILL usually requires the use of diamond bits from the higher matrix groupings



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