Galvanized Steel Grain Silo Making Roll Forming Making Machine is the most popular type of roll forming machines, mainly suitable for PPGI, GI and other harder coils. It makes different shape of color steel roof sheet, which is used in the construction of various industrial plants, buildings, factory, villages, warehouses, supermarkets, hotels, exhibition, shopping malls, shutter doors and ect. The finished sheet usually worked for roof and wall panel. It has beautiful design, and widely used in all over the world.