We have fabricated a test stand which consists of a 3" xxh pipe 4130 Annealed HT to 100000 yield. The ends are 7/16 Autoclave fittings and hammer unions. We are planning to use the test stand for hydrotesting our pressure relief valves. But before we put it to use, we need to get it certified for the pressure rating. Are there any governing bodies or agencies who can certify such testing units?
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