XII Prestressed Mainline Sleeper

Type	Unit	Maximum speed(passenger transport）	Maximum speed(freight transport）	length	width		Height		weight
					end	middle	end	middle
XII	25 t	160 km/h	80 km/h	2500 mm	306.5 mm	185 mm	235 mm	175 mm	285 kg

Generally,XII sleeper is suitable for ballasted track with standard rail gauge of 1435 mm. It's used for radius ≥300 m of curve track and direct track ,and applies to steel rails of 50Kg/m or 60 Kg/m. The fastener matched is Type II elastic strip. The maximum axle load is 25 t.