API Drilling Crossover Subs for well Drilling

Product Description Lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. There’re two types for drill tool lifting sub in structure: type A or B. Type A lift sub is with 18 degree shoulder, and type B is with 90 degree shoulder. All lifting subs are complied with API standard. Technical parameter Elevator groove OD (inch) Sub OD (inch) Length (inch) Connection 2-3/8 2-7/8 36/47 NC23 2-7/8 3-1/2 NC26 3-1/2