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Email: zuanlongbits@gmail.com

Tel: +86-029-82612068

Fax: +86-029-82612068

Address:No 66, Changming Road, Xi'an, Shaanxi Province, China

PDC Four Wings Concave Drill Bit, Non Coring Bit for Well Drilling

PDC Four Wings Concave Drill Bit, Non Coring Bit for Well Drilling

The four wings normal type concave drill bits suits for f<=10, the reinforced type suites for f<=15

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