| |||
| 镶碳化钨钻头 | |||
| 碳化钨镶齿钻头 | |||
| |||
| 镶碳化钨齿钻头 | |||
|
tungsten insert bit : 12 do fraz, 3 tematyki |
| Mechanika | 1 |
| Ropa / ropa naftowa | 2 |
| Technika i technologia | 9 |
| |||
| 镶碳化钨钻头 | |||
| 碳化钨镶齿钻头 | |||
| |||
| 镶碳化钨齿钻头 | |||
|
tungsten insert bit : 12 do fraz, 3 tematyki |
| Mechanika | 1 |
| Ropa / ropa naftowa | 2 |
| Technika i technologia | 9 |