The main grades of aluminium for ropp closures material include 1000 series, 3000 series and 8000 series aluminum alloy sheet, among which 1060 aluminum coil sheet, 3104 aluminum coil sheet, 3105 aluminum coil sheet , 5052 aluminum coil sheet and 8011 aluminum coil sheet, etc. 3105 and 8011 aluminum sheet for ropp closures are the most used material by major bottle cap manufacturers. The aluminum for.. read more →