Crossover subs
Crossover Sub is used to crossover from one connection size to another or as the disposable component used to extend the connection life of a more expensive drill stem member. Crossover subs are available with box x pin, box x box, pin x pin connections. Crossover subs are manufactured from 4145H or 4140H alloy steel. The connections are protected by phosphate surface coating that minimizes galling on initial make-up.
When ordering, please specify:
- Identify subs Example: Kelly sub, crossover drill pipe to drill collar, drill collar to drill collar, bit sub etc.
- Overall length
- Largest diameter
- Bore ID
- For Bit sub, add : float bore size and type if desired
Description
| · Product | · Top junction block | · Lower junction block | · Type |
| · Kelly joint | · Kelly | · Drill pipe joint | · A or B |
| · Kelly joint | · Drill pipe joint | · Drill pipe joint | · A or B |
| · Drill pipe joint | · Kelly | · Drill collar | · A or B |
| · Crossover joint | · Drill collar | · Drill collar | · A or B |
| · Bit joint | · Drill collar | · Bit | · A or B |
| · Swivel joint | · Swivel lower joint | · Kelly | · Type C |
| · Fish joint | · Kelly | · Drill pipe joint | · Type C |
| · Drill pipe joint | · Fishing tool | · Type C |
