Extrusion aluminium alloy profile for roof building 1)Material:aluminum alloy 2)Standard:GB 5237-2008 3)high-quality Extrusion Aluminium Alloy Profile For Roof Building 1)Alloy No.:6063 2)Temper:T5 XS-050_1313)Surface Treatment:1,Powder Coating 2,Anodize 3,Electrophoresis 4,Mill Finish 5,Wood Grain 6,Flourocarbon Coating 7,PVDF Coating 8,Polish 4)Coating Colour:silver, bronze, champagne, black, ...