The most important condition to ensure long-term protection against corrosion is DUPLEX system (hot-dip galvanizing and powder coating) to appropriate surface preparation before powder coating.
Usually between galvanizing and painting elapses a few days (storage, transport, processing), then the constructions should be carefully degreased and provide with a sand blasting.
Z-M TOMABO uses a high-pressure degreasing technology, with specialized chemicals, dulling using a fine-grained, German stainless steel shot or mineral corundum that promoted very good adhesion of paint coating.
It is also possible to use conversion coating instead of mechanical surface preparation.
This technology is primarily dedicated to black steel and aluminum.