... . Aluminum profiles: 1,Material: 5052, 5083, 6005, 6005A, 6N01,6061, 6063, 6082, 7003,7N01,7005,7020. 2, Size: width 50~938mm ... ~18mm. Max. Length 30 meters. 3, Temper: H112, T1,T4,T5,T6 4, Surface treatment: mill, finish etc. 5 Application: EMU ... , CRH, metro and light rail, inter-city train, monorail etc.. extruded aluminium hollow profile applied for metro