Rough Surface Condition Hot Dip Galvanizing

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.

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Ed Durham

How do you prepare the surface of a high strength steel fastener to be galvanized?

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