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Bobi Petroleum Drilling Tool (China) Co., Ltd

Bobi Petroleum Drilling Tool (China) Co., Ltd


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Drill Collars
Casing, Tubing & Drill Pipes


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 track by large rigidity. Drill collar are manufactured strictly from API Spec7-1 and SY/T5411 standard.
Drilling Equipment Casing, Tubing & Drill Pipes
Variation #1 PN
     Qty
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