aluminum sheet for curtain wall alloy type: 1050, 1100,1060,3003,5052 width: max: 1950mm~2290mm Surface: smooth & flat aluminum sheet for curtain wallalloy type: 1100,1060,3003,8011 ,5052width: max: 1950mm~2200mmsurface: no dent, no oil, no spot,no scarch , free of burr ,good pilling& flatness Super Wide Aluminum Sheets for Curtain Wall