Rotary Bit mo le viliina o Pu
E fa'aoga lelei e le Drill Store le fa'atekonolosi fa'ata'ita'i fou ma fa'agaioiga gaosiga mo a tatou vili ta'avale, fa'aoga tele mo le fa'aosoina o le vili, fa'a'a'a ma toe feliua'i solo.
E fa'aogaina e le 'oti fa'ameamea fa'apipi'i fa'apipi'i.O polo sili, pa'u ta'avale ma ga'o fa'apitoa i le ola ma le gafatia, lea e o'o atu ai i le fa'atuputeleina o le ola o le 'oti.O a tatou fa'amaufa'ailoga mata uamea e fa'aaogaina ai mea mama.O fa'amaufa'ailoga mata uamea ua fa'amaonia i le fa'atupuina o le ola fa'asaga ia tatou tagata tauva i si'osi'omaga faigata ma tulaga faigata e viliina.
Avalibale IADC
| Fa'asologa | Fa'atatauga | Faiga Fa'atino | |
| Saosaoa Taamilomilo(RPM) | Mamafa ile Bit-WOB(lb/in) | ||
| 30 | Malu tele | 70-140 | 1000-4000 |
| 40 | Malu | 70-140 | 1000-4000 |
| 50 | Malu ile Medium | 50-140 | 2000-5000 |
| 60 | Medium i le Malosi | 50-110 | 3000-6000 |
| 70 | Faigata | 50-90 | 3500-7500 |
| 80 | Matua Faigata | 40-80 | 5000-8000 |
Tele Avanoa
| La'ititi | ||
| i totonu | mm | Lapopoa Pin |
| 6 3/4 | 171 | 3 1/2 |
| 7 7/8 | 200 | 4 1/2 |
| 8 1/2 | 216 | |
| 9 | 229 | |
| 9 7/8 | 251 | 6 5/8 |
| 10 5/8 | 270 | |
| 11 | 279 | |
| 12 1/4 | 311 | |
| 13 3/4 | 350 | |
Tusi lau savali iinei ma lafo mai ia i matou







