Xi'an Overseas Oilfield Supplies Co. LTD (XOOS) 


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Drill collar - Downhole Drilling Tools

Drill collars:
Standard: API Spec7
Material: AISI 4145H Alloy Steel or Non-magnetic material
Specification: OD: 3-1/8”-11
Length: 10’-31
Geophysical Equipment/Locator & downhole » Downhole Drilling Tools »   


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