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Product Name : Drill Collar
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Information : Drill Collar, Spiral Drill Collar, OCTG Drill Collars, Steel Drill Collar Standard :API SPEC 7-1 Steel grade:AISI 4145H Sizes:3 1/8" 11" Connected Type:NC, IF, REG Length:30 – 31 ft ± 6 ft. Type of design:(1)Plain (2)With a recess of the elevator (3)With a recess of the elevator and power slips (4)Spiral and a wide range of type mixtures
Company : HUNAN GREAT STEEL PIPE CO.,LTD.
HUNAN GREAT STEEL PIPE CO.,LTD.
86 731 88672086
