... service life, reliability, etc 17-type forging coupler forge yoke introduction:Forging coupler yoke are upgrading product on the base ... . With cooperation of FAW Barrett Forging Company, we successfully research,design, manufacture 17-type forging coupler yoke, and in 2006 ... railway wagon, and it is made by 25MnCrNiMoA through forging, welding, heat treatment and machining processes. Product main ...