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Flanges - Ratings in Classes and Pressure Numbers (PN)

Pressure numbers (PN) compared to flange class designations

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Flange Class 150 300 400 600 900 1500 2500
Flange Pressure Number, PN 20 50 68 100 150 250 420

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Related Topics

  • Codes and Standards Piping codes and standards - ASME, ANSI, ASTM, AGA, API, AWWA, BS, ISO, DIN and more...
  • Pressure Ratings Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more

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