Railway Sdu25 plastic dowel is one part of rail fastening system, it should be pre-inserted into the concrete sleeper separately before assembling the rail fastening system parts, so it can be considered as the fastening foundation.

Rail plastic dowel is one part of rail fastening system, it should be pre-inserted into the concrete sleeper separately before assembling the rail fastening system parts, so it can be considered as the fastening foundation.

E2003 Resilient fastening systems shall be used with concrete sleepers and bearers.

Type I rail fastening system is suitable for 50kg/m and 60kg/m rails that fixed on concrete shoulders

Type II rail fastening systems (also calledf Spring clip II fastenings) are suitable for connecting 60kg/m steel rails and prestressed concrete sleepers

Type III Rail Fastening System (also called Type III elastic fasteners) are fasteners without bolts and shoulders.