: Langfang pangolin construction machinery co. LTD

Langfang pangolin construction machinery . LTD

Oil Field Non Magnetic Drill Collars

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Langfang pangolin construction machinery co. LTD

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Oil Field Non Magnetic Drill Collars

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Oil Field Non Magnetic Drill Collars

Oil Field Non Magnetic Drill Collars Drill Rig Tools Standard Non Magnetic Drill Collar For Oil Field Introduction The non-magnetic drill collar is made of low-carbon high-chromium manganese alloy ...

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Oil Field Non Magnetic Drill Collars

300mm Non Magnetic Drill Collars

79.4mm Non Magnetic Drill Collars

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