Crownsteelbuildings.com is a reputable manufacturer of metal buildings. They have made hundreds buildings for commercial and residential use. They make garages, metal storage sheds, steel frame homes.
Crownsteelbuildings.com makes their steel building using Galvalume Steel. This steel is durable. The company uses a unique corrugation in their construction in their projects.
I urge you to visit their website and see their model steel buildings.