Duplex Coating The colour coating of hot-dip galvanized steel also called Duplex system is a particularly high-quality protective system. Zinc and colouring complement one another's effectiveness to increase the duration of corrosion protection by 1.2 to 2.5-fold. The colouring can be either be applied in the colour coating process or by powder coating.
The advantages of a Duplex System with powder coating are:
Very good long-term corrosion protection Suitability as a protection system for high-level corrosion exposure up to corrosion class C5 Attractive appearance, unlimited colour variety High level of mechanical resilience Perfect all-round protection also of places that are covered and difficult to access as well as cavities High level of cost effectiveness due to its long service life Environmentally-sound process No drying needed, can be used straight away and transported immediately after coating Corrosion Protection According to examinations by the Institute for Corrosion Protection in Dresden, a Duplex system, compared with an average colour coating with hot-dip galvanizing is:
10 times more abrasion resistant 8 times more chip resistant 20 times more edge protection 
