We have a powdercoat plant where I work, there are many factors in how the coat comes out like have they used undercoat or how long and what tempriture was it backed at or has it been blasted and acid dipped or not-we have a 4 stage dipping tank set up-or how thick was the powder put on -to thin will rust too thick will crack. Done right it is very strong I have hit rocks etc and it has only scrapped the coating off with no chipping.
Having said that p/c goes dull after a few months of washing dirt and mud off , I will be painting my bar work from now on and its easyer to touch up aswell.