Galvanized regular spangle coils exhibit a visible spangled pattern on the surface. This pattern is characterized by small, uniform zinc crystals that form during the galvanizing process. The regular spangle appearance is often considered more aesthetically pleasing and is commonly seen on galvanized steel products. The spangled pattern can vary in size and density, depending on factors such as the zinc coating thickness and the specific galvanizing process used.

Galvanized zero spangle coils have a smooth and matte surface without any visible spangle pattern. This surface appearance is achieved by controlling the galvanizing process to minimize or eliminate the formation of zinc crystals. The zero spangle appearance is often preferred for applications where a smoother surface is desired, such as in certain architectural or decorative applications.

Zero spangle coils, with their smooth and matte appearance, may be preferred in applications where the absence of a spangle pattern is desired for aesthetic or functional reasons.