Roller Kelly Bushing is one of common wellhead tools. It can be applied to rotary table from 17 1/2'' to 49 1/2''
|
Kelly Size |
(mm) Elevation |
(mm) Bedplate Size |
Tapering |
|||
| in | mm |
Top |
Lower |
Opposite Side |
Large End |
|
| 3 1/2 | 88.9 | 406 | 356 | 332 | φ332 | 1:3 |