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Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd.
 
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drill collar

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Title： drill collar 
Unit price： Negotiable
MOQ： Negotiable
Quantity： Negotiable
Delivery date： Since the payment date Days delivery
Contact： bai Sophia （Ms.）    
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Details

 The 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. MS brand drill collar are manufactured strictly from API Spec.7 and SY5144 standard.


drill collar
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