Bogie for subway practice I. Core Technological Necessities: Safety is the one Criterion Bogie body castings usually are not ordinary cast iron areas. They bear the entire bodyweight on the auto physique and passengers and continually face up to many impacts and vibrations from the track. Their technical needs revolve https://omiyou.com/post/165753_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html