Roofing is a large industry in building construction all over the world. Color coated roofing sheets are highly used for pre-engineered applications. These have a wide number of commercial and traditional applications. GI roofing sheets mean galvanizing iron sheets. Galvanizing is a process by which iron is made rust-free. In the galvanizing process, the zinc coating is done on the iron or steel to make it rust-free. So, GI sheets are stainless steel sheets galvanized with zinc. GI sheets also include hot-dip and electro-galvanized steel sheets ie galvanized corrugated roofing sheets . GI sheets find uses in every sector of the economy. They are used in agriculture as grain silos, feeding troughs, sprayers, and pans. In construction activities, GI sheets find wide use as roof sheets, walls, panels, covers, rolling shutters, highway bombers, partition walls, and painted coated products. Lots of household items are made with GI sheets. There are several advantages of ...