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69 ChaoYang Road,Beijing,Beijing,China China
Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially dr
The coring tools are used for acquisition of the rock core in petroleum drilling. Everytime one to three secti
Description Specification Connection Central Upset Dia Heavy weight drill pipe 6 5/8&
Cross-over sub acts for conversion and connection of drill stem component in petroleum , natural gas and geolo
Kellys are made from ***5H modified alloy steel in accordance with API Spec.7 latest edition, which are quench
Contact Person Mr. smith dong
Address 69 ChaoYang Road, Beijing, Beijing
We will contact you soon .
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