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• Sucker Rod - Grade D, Grade K & Grade KD
• Polish Rod
• Sucker Rod Coupling
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, down connection on the pump piston. 
Polish rod is a kind of special sucker rod connected with sucker rod and beam hanger. It is at the top of sucker rod, need to bear the most strength.
Coupling type: Class T (full size and slim hole ) ,Class SM (full size and slim hole ).

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