Corrugated steel roofing sheet is cold-bent by rolling to form various wave-shaped profiled plates. It is suitable for roofing, wall surface and interior and exterior wall decoration of industrial and civil buildings, warehouses, special buildings, large-span steel structures, etc. It has light weight, high strength, rich color, convenient and fast construction, earthquake resistance, fire prevention, rain prevention, and life expectancy Long and maintenance-free features have been widely promoted and applied.