Bogie for subway train I. Main Technical Demands: Safety is the sole Criterion Bogie frame castings are not common Forged iron parts. They bear the complete body weight of the car human body and travellers and repeatedly endure many impacts and vibrations in the monitor. Their specialized demands revolve round https://social.kubo.chat/post/240073_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html