stack of corrugated metal roofing sheets ,galvanized iron (GI) sheets or aluzinc sheets

Material: Typically made from galvanized steel or aluminum-zinc coated steel, which provides excellent corrosion resistance. 
Design: The corrugated (wavy) profile adds strength and structural integrity to the sheets. 
Durability: They are designed to withstand harsh weather conditions, including heavy rainfall and extreme temperatures. 
Applications: Widely used in construction for residential, commercial, and industrial buildings