Corrosion Prevention The corrosion prevention requirements should be determined according to the environmental conditions. The coating systems offer additional designing possibilities (choice of colour). We offer: Galvanizing with a layer thickness of 575 g/m² Colour coating, i.e. surface preparation by abrasive blasting SA 2.5, zinc phosphate couch/precoating in the workshop, protection coating at the site by two component epoxy in colour at choice. Duplex system, i.e. galvanizing, primer in workshop, final coating at site, colour at choice.