Feature
The mechanically locked pressurized drill pipe is suitable for drilling in hard formations. Its external key structure generally consists of three or six keys, with three or N sets of large concave-shaped pressurized sections on the external keys of the drill pipe. The internal keys are usually composed of three or six wear-resistant straight bars. This drill pipe transmits high pressure to the drilling tool, has strong torque resistance, and is suitable for drilling in harder formations.
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