Railway Castings, as vital load-bearing factors in railway programs, have their interior microstructure immediately figuring out the efficiency and service existence. Metallographic Investigation, by revealing the microstructure traits of resources, delivers a direct foundation for the quality evaluation of track castings. one.Specialized ways of metallographic Examination one.one Met... https://500px.com/photo/1117471497/rail-shoulders-by-okok-okok