Drill Pipe Rotary Clamp Device is installed on the wellhead, When the Kelly is not on the wellhead (inside the rotary table), it may give drill pipe a forward torque or backward torque, and to finish forward rotation or backward rotation and the hole reaming operation instead of the Kelly. The merits of it are: it can be directly installed on the wellhead or casing on the drill tools without unleashing the drill tools. It can accommodate drill pipe form 3 1/2 inch to 5 inch the rated torque of it is 60KN.m.
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