Drill Collar
Product Details
Drill collars
Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole tract by large rigidity.
Manufactured strictly from API Spec 7.
Size from 3-1/8" to 11"
Type: Normal drill collars, Non-magnetic drill collars, Spiral drill collars
Material: AISI 4145H
Length 9.15m, 9.45m
Drill Collar
- Welded Line Type:Spiral
- Place of Origin:Shaanxi China (Mainland)
- Country:China (Mainland)
- telephone:86-29-88341686
| Payment Terms: | L/C,D/A,D/P,T/T |
| Welded Line Type: | Spiral |
| Place of Origin: | Shaanxi China (Mainland) |
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