1.standard:API7-1
2.OD:79.4mm-279.4mm
3.factory directly delivery
4.Alloy steel,carbon steel,stainless steel etc.
(Factory)API Oilfield Drill Collar
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Company Profile
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1.standard:API7-1
2.OD:79.4mm-279.4mm
3.factory directly delivery
4.Alloy steel,carbon steel,stainless steel etc.