aluminium profiles 6063 standard in T5. Special aluminum alloy profile for the manufacture of bus structure 1. Material :mainly in 6000 grade ,such as 6063,6061 ,6005etc. other grades up on customers requirement 2. temper: mainly in T5/T63. finish : 1)mill finish 2)anodizing :such as silver anodizing ,mat anodizing ,gold anodizing,3) powder coating (needed to be provide Panton Color No. ,such as ...