Specification of the Material. Aluminium Roofing Sheets in AA3105H18 or AA8011H18 Alloy with
8/9/10 feet long, 800 mm width and 0.45 mm thick to maintain the
quality. On each sheets there should be computerized printing of
thickness, name of manufacturer, ISO number and “FOR FREE
DISTRIBUTION BY THE HOUSING DEPARTMENT, GOVT. OF
MEGHALAYA”...