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Drill collars Drill collar thread type OD ID Length (mm) NC23-31 mm in mm in NC26-35 (23/8"IF) 79.4 3 1/8 31.8 1 1/4 9150 NC31- 41(27/8"IF) 88.9 3 1/2 38.1 1 1/2 9150 NC35-47 104.8 4 1/8 50.8 2 9150 NC38-50(31/2"IF) 120.7 4 3/4 50.8 2 9150 NC44-60 127.0 5 57.2 2 1/4 9150 NC44-60 152.4 6 57.2 2 1/4 9150 (or) 9450 ... Keywords: Drill collar Drill pipe Casing and tubing Drill Bit Slick Drill collars Non magnetic
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