... long service life, reliability, etc 17-type forging coupler forge yoke introduction:Forging coupler yoke are upgrading product on the base of ... Forging Company, we successfully research,design, manufacture 17-type forging coupler yoke, and in 2006 we got the manufacture qualification license ... by the Ministry of Railways.17-type forging coupler yoke is used for the 70-ton railway wagon, and it is made ...