IADC classification : PDC bits | |||||||
A Bit body |
B Formation type |
C Cutting structure |
D Bit profile |
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"M" | Matrix | 1 | Very soft | 2 | PDC, 19mm | 1 | Short fishtail |
"S" | Steel | 3 | PDC, 13mm | 2 | Short profile | ||
"D" | Diamond | 4 | PDC, 8mm | 3 | Medium profile | ||
Example | 2 | Soft | 2 | PDC, 19mm | 4 | Long profile | |
M | Matrix | 3 | PDC, 13mm | ||||
4 | Medium | 4 | PDC, 8mm | ||||
3 | PDC 13mm | 3 | Soft to medium | 2 | PDC, 19mm | ||
4 | Long profile | 3 | PDC, 13mm | ||||
4 | PDC, 8mm | ||||||
4 | Medium | 2 | PDC, 19mm | ||||
3 | PDC, 13mm | ||||||
4 | PDC, 8mm | ||||||
5 | No code | ||||||
6 | Medium hard | 2 | Natural diamond | ||||
3 | TSP | ||||||
4 | Combination | ||||||
7 | Hard | 2 | Natural diamond | ||||
3 | TSP | ||||||
4 | Combination | ||||||
8 | Extremely hard | 2 | Natural diamond | ||||
3 | Impregnated diamond |