Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
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155mm Diameter DTH Drill Bit For Hole Blasting Drilling ISO9001 Approval
Different Faces Shapes:
CONCAVE / FLAT / CONVEX
Different Buttons Shapes:
1. Dome / Round button
Used as gauge buttons of DTH bits, suitable for very abrasive and very hard rock formation.
2. Parabolic / Semi-ballistic
Used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard rock formations.
3. Ballistic button
Used front buttons of DTH bits, suitable for medium abrasive and medium hard formations. Also be used as gauge buttons for soft rock.
Package: