Bop, Mud Pump, Casing Centralizer manufacturer / supplier in China, offering API 7-1 Certified 4′′ 5′′ Kelly Bar AISI 4145h for Drilling Rigs, Forged Steel Manual Tongs with Non-Slip Grip for Safe Drill Pipe Connection, API 2 7/8" Drilling Pipe 3 1/2" Premium Connection and so on.
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