There are 3 guages (thicknesses) of roofing sheets :28guage (0.4mm), 26guage (0.5mm) and 24guage (0.6mm)
Profiles (patterns) are Bell Rib or Normal Corrugation
Sheets can be either unpainted or coloured.
Aluzinc unpainted sheets are Prime steel coils ASTM A792M Yield strength 275N/mm2 min, coated with AZ150 ; a mix of aluminium and zinc.
Coloured sheets use the aluzinc sheets as a base and are painted with Silicon Modified Polyester 25 microns including primer or painted with PVDF (polyvinylidene fluoride) paint.