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API11B Sucker Rod
Sucker rod is an important part of a sucker rod pumping equipment. Sucker Rod connect with coupling to be a rod string, and up through polished rod connection on the pumping unit or PCP motor, down connection on the pump piston or PCP, its role is to ground the reciprocating movement of the pumping unit horse head suspension point is passed to the down hole pump or pass the rotation of the PCP motor torque to down hole PCP.
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