KSQ Technologies (Beijing) Co. Ltd
KSQ Technologies (Beijing) Co., Ltd.
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Drill Pipe Sub for Connection API Standard Tricone Bit Cross Over Subs
Description:
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.
Cross-over sub is API standard Material is AISI 4145H chromium-molybdenum steel.
We can offer Kelly cross-over sub, Drill pipe cross-over sub, Interim cross-over sub, Drill collar cross-over sub, Drill bit cross-over sub, Swivel cross-over sub,
Fishing cross-over sub, etc.
Cross over subs come in three basic styles:
A: Pin (male) x Box (male) B: Pin (male) x Pin (female) C: Box (female) x Box (female)
| Technical specification and parameters for Cross-over Sub | ||||
| Sort | Description | Upper Connection Part | Lower Connection Part | Type |
| 1 | Kelly cross-over sub | Kelly | Drill pipe | A or B |
| 2 | Drill pipe cross-over sub | Drill pipe | Drill pipe | A or B |
| 3 | Interim cross-over sub | Drill pipe | Drill collar | A or B |
| 4 | Drill collar cross-over sub | Drill collar | Drill collar | A or B |
| 5 | Drill bit cross-over sub | Drill collar | Drill bit | A or B |
| 6 | Swivel cross-over sub | Swivel lower sub | Kelly | C |
| 7 | Fishing cross-over sub | Kelly | Drill pipe | C |
| Drill pipe | Fishing tools | |||
