We have a series of powder-coated electrical cupboards that need to be cut open to install recessed components. The exact product description can be found on the manufacturer's website.
The manufacturer describes the material as such (abbreviated for brevity) :
1.2 mm mild steel for enclosures ... Folded and seam welded ... Structured powder coating ... For outdoor installation, the use of a rain hood ARF and 100% polyester paint coating is recommended. The corrosion resistance must be taken into consideration.
The enclosures will be installed indoors but are expected to attain a service life of at least 20 years.
We want to install an embedded touch screen in the door and also install air vents and a cooling system on the side. This requires cutting openings in the door and sides.
How do I prevent the fresh steel around the cutouts from rusting?
From what I've found on the internet, it seems the best option is to re-powder-coat where we have cut (but I don't know how to do that), I was hoping for an easier solution :
- A spray-paint type product?
- A tar based plumbing product, maybe?