Rough Surface Condition
Rough surface condition or appearance has a textured, rough coating over the entire product. The cause could be the steel chemistry or the preparation of the surface by mechanical cleaning, such as blasting before the part reaches the galvanizer. Rough surface condition, as seen in the image to the left, can actually have a positive effect on corrosion performance because a thicker zinc coating is produced. One of the few situations where rough coating is cause for rejection is if it occurs on handrails.