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Stainless steel pipe for sprinkler systems

Question asked by redd682 on Oct 2, 2019

Engaged in a sprinkler system replacement project where the use of stainless steel piping is the best fit for the conditions encountered.  However, NFPA 13 does not include stainless in the pipe material choices and no listing for stainless piping has been located.  Has anyone run into this problem and, if so, what was your approach to resolving it?