Type
? 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 ).