Min. Order Reference FOB Price
1 Piece US$2.00-48.00 / Piece
Product Description
Oilfield Sucker Rod and Polished Rod Couplings for Oil &Gas Well Polished rod couplings are designed for connecting of the polished rod to the top rod of the string. Contrary to rod couplings, polished rod couplings have a female cone that eliminates the coupling twist-off in the course of ...