[slorio]

I wouldn't recommend the treated pine. Since they changed the treatment process to eliminate arsenic, the treatment is now very corrosive to steel. All of the framing connectors and nails that come in contact with new treated lumber need to be hot dipped galvanized or stainless to fight off the corrosive properties of that treated lumber. I believe that use of that treated lumber would be very corrosive to the steel in our beds despite any paint you may use.

I hope this is helpful.
regards,
Steve
New Orleans