Min. Order Reference FOB Price
1 Piece US$3.00-38.00 / Piece
Product Description
API 11B Oil Well Accessories Polished Rod &Sucker Rod/String Coupling Product Description 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 ...