Crossover Sub/Joint

Cross-over sub acts for conversion and connection of drill stem component in petroleum ,natural gas and geology drilling work.It is used mainly for connecting of upper drill tools and lower drill tools during drilling operations.

Sort Description Upper Connection Part Lower Connection Part Type
1 Kelly cross-over sub
2 Drill pipe cross-over sub
3 Interim cross-over sub
4 Drill collar cross-over sub
5 Drill bit cross-over sub
6 Swivel cross-over sub
7 Fishing cross-over sub