Bogie for subway coach I. Main Technical Necessities: Protection is the Only Criterion Bogie frame castings are certainly not ordinary cast iron areas. They bear your complete excess weight in the car or truck system and travellers and continuously withstand numerous impacts and vibrations through the observe. Their complex necessities https://omiyou.com/post/165754_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html