Product advantages
Product types and applicable range of diamond composite anchor drill bits
| Product | Grade | Diamond PDC type | Applicable Rock Formation | Drill Bit Diameter | Common Thread | Remarks |
| PDC Two-wing Anchor Drill Bit | Super Strength | Full Piece (flat piece) | F≤12 |
25 27 28 29 30 32 36 42 |
M14×1.5 M16×2 M14×2 M12×2 | Our factory uses two types of diamond composite pieces: flat piece and spherical piece. Flat piece has fast penetration and is applied to complete formations. Spherical piece has strong impact resistance and is not easy to break, which is suitable for broken and complex formations. |
| High Strength | Full Piece (Spherical piece) | F≤12 | ||||
| Reinforced | Full Piece | F≤10 | ||||
| Half Piece | ||||||
| Ordinary | Full Piece | F≤8 | ||||
| Half Piece |
Reference table for PDC Core Drill Bits
| Rock | Hardness category | Soft | Medium-soft | Medium | Medium-hard | Hard | Harder | Hardest | |||||
| Drillability level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
| Praetz hardness | F≤10 | 10 < F≤15 | 15 < F≤20 | ||||||||||
| Rock Type | Sandstone, Limestone, Marble, Dolomite, Pyrite, Unsturdy Granite, Shale | Granite, Hard Sandstone, Conglomerate, Limestone, Quartz Veins | Hard granite, Quartzite, Basalt, Igneous Rock | ||||||||||
| PDC Core Drill Bits | Ordinary type | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | |||||
| Reinforced type | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | |||||
| High-strength type | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ | |||
