... , 7 series alloy, with complex sections, max.length 30 meters, used for subway, inter-city train,light rail. Aluminum profiles: 1,Material ... 30 meters. 3, Temper: H112, T1,T4,T5,T6 4, Surface treatment: mill, finish etc. 5 Application: EMU 380 km/h ... , metro and light rail, inter-city train, monorail etc.. hollow aluminum extrusion profile applied for CRH