Crossover sub X-over sub petroleum drill stem part
Description :
Cross-over sub acts for conversion and connection and is the basic component in downhole work. It is divided into drill string cross-over sub and tubing Cross-over sub. Drill string Cross-over sub is divided into type A, type B and type C.And we can design and manufacture special types of subs to satisfy clients' ideas or drawings .
Main Models:
Description | Upper junction block . | Lower junction block | Type |
Kelly sub | Kelly | Drill pipe sub | Type A or B |
Drill pipe sub | Drill pipe | Drill pipe sub | Type A or B |
Crossover sub | Drill pipe | Drill collar | Type A or B |
Drill collar sub | Drill collar | Drill collar | Type A or B |
Bit sub | Drill collar | Bit | Type A or B |
Swivel sub | Swivel lower sub | Kelly | Type C |
Fish sub | Kelly | Drill pipe sub | Type C |
Drill pipe | Fishing tool | Type C |
Mechanical properties
O.D. Range | Min. Yield | Min. Tensile | Elongation Min. | Min. Brinell |
3.1/2 THRU | 760Mpa | 965Mpa | 13% | 285 |
7 THRU 10 | 690Mpa | 930Mpa | 13% | 277 |
API Cross over sub X-over sub
