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Quick Details Place of Origin: China (Mainland) ,Brand Name: Senwell ,,Type: Drill Collar ,Machine Type: Drilling Tool ,Certification: API ,Material: Alloy steel ,Processing Type: Forging, Use: Well Drilling ,Standard: API .Packaging & Delivery Packaging Details: packing is according to customers' requirements . Delivery Detail: 10-30 Days
API Spec 7,NC31-41,3 1/2''Oilfield Drill collar
