drill collar

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drill collar
Posting date : Dec 16, 2008
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73-
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Design & working procedure Conform to the requirment of API Spec 7 Non-API standard type of drill collars are also avalible as per client‘request Cold-rolled thread roots Thread connections are performed with stress relief grooves phosphated . threads applied Option: Drill Collar with slip and elevator recesses, with hardbanding, with spiral grooves, with elevator recess, with elevator recess with hardbanding e.g. avalible

ECROBOT CO., Ltd, Business Registration Number : 220-88-71747, CEO J.W.Park, TEL : +82-2-552-7676, E-mail : E-mail : Contact us
Address : (Hwanghwa B/D 11F, Yeoksam-dong)320, Gangnam-daero, Gangnam-gu, Seoul, South Korea
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