... ) Alloy Temper: 6061,6063, T4/T5/T63) SurfaceTreatment: Mill Finished, Anodized. (silverwhite,mattanodized,black)4) Standard:GB/T5237-2004,GB/T6892 ... per customers’requirment. Aluminum extrusion tube, with puchining on ends, golden anodized surface treatment