... , 6 series, 7 series alloy, with complex sections, max.length 30 meters, used for subway, inter-city train,light rail. Aluminum ... , Size: width 50~938mm, thickness 1.5~18mm. Max. Length 30 meters. 3, Temper: H112, T1,T4,T5,T6 4, Surface ... , CRH, metro and light rail, inter-city train, monorail etc.. extruded aluminium hollow profile applied for metro