Guard Rail Fastening System ( Protect Rail Fastening System)

Guard rails(protect rails) are divided into five types: bridge guard rails, crossing guard rails, turnout guard rails, curved anti-wear guard rails, and curved anti-off-line guard rails. Guard rails generally require the use of old rails. The guard rail laid on the main line shall generally not be less than 38 kg/m. Guard rail joints should be connected by joint splints of the same rail type. The nut should be installed outside the rim groove.
When the rolling stock derails on the bridge head or on the bridge, the guard rail can guide and limit the derailed wheels to the rim groove between the guard rail and the basic rail and continue to roll out along the bridge, so as to prevent the rolling stock from deviating sideways and hitting the bridge or self-bridge falling up and down, causing serious accidents. In addition, it is also possible to help the wheels of derailed rolling stock to re-climb onto the foundation rail. So it is an important safety facility.