HDG Datasheet 16: Staining and Discolouration of Hot Dip Galvanized Steel | Galvanizers Association

HDG Datasheet 16: Staining and Discolouration of Hot Dip Galvanized Steel

Galvanized steelwork can be subject to staining and discolouration which can sometimes be mistaken for failure of the coating and rusting of the base steel.

Hot Dip Galvanizing DefectsThere are numerous reasons why such staining may take place.

Read the datasheet for more information on post galvanizing defects:

  • Surface contamination
  • Weld seepage
  • Seepage staining
  • Swarf contamination
  • Timber staining
  • Water staining
  • Rusting of unprotected parts

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