Although it is still popularly called iron in the uk the material used is actually steel which is iron alloyed with.
Iron used for roofing.
The popular 0 42bmt is used predominantly for domestic roofing the 0 48bmt is used mostly for commercial applications and the 0 60bmt now provides a heavier and stronger profile in the range.
Iron cast and wrought iron are two distinctly different products both with specific purposes in construction.
Corrugated galvanised iron or steel colloquially corrugated iron near universal wriggly tin taken from uk military slang pailing in caribbean english corrugated sheet metal in north america and occasionally abbreviated cgi is a building material composed of sheets of hot dip galvanised mild steel cold rolled to produce a linear corrugated pattern in them.
This provides incredible strength and durability making it ideal for long lasting structures with wide open spaces.
Within the construction industry copper is most often used for cladding electrical wiring heating systems oil and gas lines rainwater systems and roofing.