The heavy-weight drill pipe with one Central thickening
Description
Specifications
| Size | The outer diameter | EXT. diameter | EXT.dia. thread |
EXT.dia. thread |
Thread type | Max.the diameter of the Elevator | The diameter of the Central part planted | Min. pass dia. |
| 3 1/2 | 3 1/2 | 2 1/4 | 4 3/4(4 7/8,5) | 2 1/4 | NC38 | 3 7/8 | 4 | 2 |
| 2 1/16 | 2 1/16 | 2 13/16 | ||||||
| 4 | 4 | 2 1/2 | 5 1/4 | 2 1/2 | NC40 | 4 3/16 | 4 1/2 | 2 1/4 |
| 2 9/16 | 2 9/16 | 2 5/16 | ||||||
| 4 1/2 | 4 1/2 | 2 11/16 | 6 1/4 | 2 11/16d> | NC46 | 4 11/16 | 5 | 2 17/16 |
| 2 3/4 | 2 3/4 | 2 1/2 | ||||||
| 2 13/16 | 2 13/16 | 2 9/16 | ||||||
| 5 | 5 | 3 | 6 5/8 | 3 | NC50 | 5 1/8 | 5 1/2 | 2 3/4 |
| 5 1/2 | 5 1/2 | 3 1/4 | 7(7 1/4,7 1/2) | 3 1/4 | 5 1/2FH | 5 11/16 | 6 | 3 |
| 3 3/8 | 3 3/8 | 3 1/8 | ||||||
| 3 7/8 | 3 7/8 | 3 5/8 | ||||||
| 4 | 4 | 3 3/4 | ||||||
| 6 5/8 | 6 5/8 | 4 | 8(8 1/4,8 1/2) | 4 | 6 5/8FH | 6 15/16 | 7 1/8 | 3 3/4 |
| 4 1/2 | 4 1/4 | |||||||
| 5 | 5 | 4 3/4 |
NOTE:
Tubes can be manufactured and supplied with a welding hard alloy