Powder coating is a paint applied in powder format which is then baked on in an oven, curing and bonding it to the product substrate.

some things that can be powder coated :

> Bicycle frames + parts
> Hydronic heaters Cast Iron or Steel panel
> Bathroom fixtures e.g.: towel rails , taps.
> Automotive parts , wheels ect.
> Security doors
> Steel and Alloy sheeting

As long as it is metal it should be possible.