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Beijing jiayou xincheng industry and trade co. LTD

City:langfang

Province/State:hebei

Country/Region:china

Contact Person:MrGeorge

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Combined Interlocking Kelly Bar 52m Drilling Depth

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150KNm Rated Torque Drill Rig Kelly Bar Mechanical Locking Type Multilocking Kelly Bar Combined type kelly bar is a kind of combination drill, which ...

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