Metal flashings are one of the essential parts in steel construction.It has two main functions: ☆ Prevent leakage of rain; ☆ Decorative effect. Generally, it refers to the color steel folding parts,which are used for steel structures, on door edge,window side,corner,eaves, canopy, etc. The metal flashing are made up of color steel sheets,stainless steel,aluminum sheets,galvanized steel sheets,according to the actual size and demand.