Fire sprinkler systems, galvanized pipe?

Anyone know about commercial fire sprinkler systems, I saw black pipe and fittins with the exception of a few galvanized fittings, seams to me it should all be black pipe?

http://www.fire.nist.gov/bfrlpubs/fire94/PDF/f94022.pdf

It does not seen correct. I only comment that I do not have the expertise to evaluate fire sprinkler systems in my reports.

http://www.fire.nist.gov/bfrlpubs/fire94/PDF/f94022.pdf

It could be ok, but I am not postive. I only comment that I do not have the expertise to evaluate fire sprinkler systems in my reports.

I will never inspect a sprinkler system. They have to be tested for a proper inspection.

Thanks, Was not inspecting the system, more of an information thing for me, I saw it when i was walking thru a new condo building the other day in a back stair well.