Where are trains made in the country, how much does a bogie cost and how do the wheels look, see the inside of the factory

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Indian Railways has many factories in the country that manufacture coaches and engines. These include Chittaranjan Locomotive Works, Chittaranjan, Diesel Locomotive Works, Varanasi, Integral Coach Factory, Chennai, Rail Coach Factory, Kapurthala, Rail Wheel Factory, Bangalore, Diesel Loco Modernization Works, Patiala and Modern Coach Factory, Rae Bareli. (Image- Indian Railways)