| JK03G | 15.00 | 90.3 | 2800 | Medium | K20 | With excellent impact & wear resistance and good performance. Suitable for cemented carbide buttons of various kinds of DTH bits (high air pressure, middle air pressure and low air pressure) and threaded drilling bits. The preferred grade for high air pressure DTH bits. |
| JK03M | 15.00 | 90.0 | 2850 | Medium | K20 |
| JK06G | 15.00 | 90.2 | 2500 | Medium | K20 | With good impact & wear resistance. Suitable for cemented carbide buttons of various kinds of DTH bits (middle air pressure and low air pressure) and threaded drilling bits. |
| JK07G | 14.90 | 89.2 | 2600 | Coarse | K20 |
| JK08 | 14.70 | 88.5 | 2400 | Coarse | K30 | Mainly used for making cemented carbide buttons of tricone bits and other drilling bits for drilling medium hard & hard rock formations, also used for making cemented carbide inserts of other drill bits. |
| JK09 | 14.50 | 88.0 | 2600 | Coarse | K30 |
| JK25 | 14.45 | 87.0 | 2700 | Coarse | K40 | Suitable for carbide inserts of heavy-duty rock drilling tools for drilling hard & super hard rock formations, also used for making tricone bits and other button bits. |
