Regular Spangle
The normal finish of zinc crystal or "flower" on the surface of the galvanized steel.

Minimized Spangle
The surface is altered soon after the product has been coated with the result that the zinc crystal formation has been suppressed. The surface normally is dull with very little spangle present. The product may not have a uniform surface across the width or from coil to coil.

Fine Spangle
The processing has been controlled to produce a much smaller and more uniform spangle than the regular spangle product. This is not available on all sizes.

Extra Smooth
The coil has been skin passed (temper rolled) to produce a surface which is smoother than the regular, as coated, product. This is often ordered when the surface is critical and/or will be painted. The zinc crystal is not visible.

Galvannealed (alloyed)
This product has its surface altered by heat treatment before the zinc has solidified after emerging from the galvanizing pot, and is entirely an iron-zinc alloy coating. The surface will be a dull gray and does not have a spangle. This product was developed for use in applications where the product will be painted (with suitable preparation) or welded. It must be noted that this coating does not have the ductility of the other finishes and may have a tendency to powder when subjected to severe forming.

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