Flange Size Calculator: Determine ASME/ANSI Pipe Flange Dimensions

Calculate Flange Dimensions by NPS and Pressure Class

Utilize our Flange Size Calculator to instantly find standard ASME/ANSI pipe flange dimensions. Input your Nominal Pipe Size (NPS) and Pressure Class to get essential data like Outer Diameter, Bolt Circle, and Bolt Information. Perfect for engineers, designers, and fabricators needing quick, accurate flange specifications.

Formula:

Flange Dimension Determination Logic

The Flange Size Calculator uses industry-standard specifications (e.g., ASME B16.5, ASME B16.47) to determine key flange dimensions. While not a direct mathematical formula, the process involves selecting the appropriate values based on:

  • NPS: Nominal Pipe Size
  • Pressure Class: Pressure Rating (e.g., 150#, 300#)
  • Flange Type: (e.g., Weld Neck, Slip-On)

Therefore, the output dimensions are derived as:

Flange Dimensions = f (NPS, Pressure Class, Flange Type)

The calculator presents typical values for standard configurations.

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