Min. Order Reference FOB Price
1 Piece US$3.00-38.00 / Piece
Product Description
API Downhole Tools Polished &Sucker Rod (String) Coupling 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 operation. ...