... Material: Carbon Steel, alloy steel Product Name: casting chain connecting link for railway wagons Materials: carbon steel, alloy steel, ... Solid work,JPG,ProeMain production equipments: wax injection, CNC-machine, machine-center,Heat treatment Furnace1) We can do different kinds ... machining, polishing, and plating 2) We make Forged chain link by closed die forging-precision die forging process in Ningbo ...