Duplex Coating
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
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