Symmetrix Bits
Amfani
1. zane mai mahimmanci ya fi dogara da ƙarancin ƙarfi fiye da eccentric.
2. babban tasirin tasiri don yin hakowa mai sauri.
3. madaidaicin rami.
4. saukin bin casing.
5. Juya juyi kuma cire bit ɗin matukin don amfani da shi don ramuka na gaba.
| A | B | C | D | E | F |
| Dia na waje.naTube Casing | Ciki Dia.naTube Casing | Reamed Dia. | Min.Ciki Dia.naCasing Shoe | Nau'in Guduma | Bututun Haɓaka |
| mm | mm | mm | mm | mm | |
| 114 | 101-103 | 125 | 93 | Saukewa: TDS79 | 60 |
| 140 | 124-127 | 152 | 113 | TDS98 | 76 |
| 146 | 127-132 | 154 | 115 | TDS98 | 76 |
| 168 | 149-155 | 184 | 138 | Saukewa: TDS122 | 76,89 |
| 178 | 159-165 | 194 | 148 | Saukewa: TDS122 | 76,89 |
| 193 | 173-180 | 206 | 164 | Saukewa: TDS139 | 114 |
| 219 | 199-206 | 234 | 185 | TDS139,TDS180 | 114 |
| 244 | 224-231 | 273 | 219 | Saukewa: TDS180 | 114 |
Jagoran oda: A+B+C+D+G
Ku rubuta sakonku anan ku aiko mana
