The FGM500B Dual-Power Rail Milling Train, independently developed by TRT, is capable of maximizing milling and full-range grinding in switch areas. This greatly enhances the operational quality of the FGM500B in switch maintenance tasks. Currently, the train has been shipped to the Guangzhou Metro depot for factory acceptance testing and will inject new and powerful technical vitality into the railway maintenance field.

The FGM500B Dual-Power Rail Milling Train utilizes profiling milling and grinding technology. By employing a "milling first, grinding second" approach, it effectively repairs defects such as rail corrugation, side wear, spalling, and head checking on the main track (with a minimum curve radius of R25m and a maximum slope of 80‰) as well as in switch areas.

The FGM500B Dual-Power Rail Milling Train demonstrates exceptional performance.As a critical part of railway tracks, the switch area is structurally complex and demands high precision and coverage for maintenance work. With its advanced design and precision manufacturing, the FGM500B achieves maximum-range milling, efficiently removing defects from the rail surface in the switch areas and restoring the rail profile. Additionally, the train excels in full-range grinding tests, performing comprehensive and fine grinding of the rails in switch areas, reducing noise and vibration during train operation, and enhancing both safety and smoothness of the ride.

The FGM500B Dual-Power Rail Milling Train's switch area operation capability will greatly improve the efficiency of railway maintenance, providing strong support for the maintenance of rail tracks in rail transit systems.