Flange Dimensions Asme Ansi B16 5

FLANGE DIMENSIONS – ASME/ANSI B16.5 Flange dimensions are determined by the pipe size and the pressure class required for the application. Flanges are standardized according publications from organizations like ASME, MSS, API and others. ASME/ANSI B16.5... More

FLANGE DIMENSIONS – ASME/ANSI B16.5 Flange dimensions are determined by the pipe size and the pressure class required for the application. Flanges are standardized according publications from organizations like ASME, MSS, API and others. ASME/ANSI B16.5 provides  weld neck  slip-on  socket weld  threaded  lap joint  blind Flange dimensions for pipes ranging 1/2" to 24" - in classes ranging 150 to 2500. Nominal Class 150 Pipe Size Diameter of No. Diameter of Diameter of Bolt NPS Flange of Bolts Bolt Holes Circle (inches) (inches) Bolts (inches) (inches) (inches) 1/4 3-3/8 4 1/2 0.62 2-1/4 1/2 3-1/2 4 1/2 0.62 2-3/8 3/4 3-7/8 4 1/2 0.62 2-3/4 1 4-1/4 4 1/2 0.62 3-1/8 1-1/4 4-5/8 4 1/2 0.62 3-1/2 1-1/2 5 4 1/2 0.62 3-7/8 2 6 4 5/8 0.75 4-3/4 2-1/2 7 4 5/8 0.75 5-1/2 3 7-1/2 4 5/8 0.75 6 3-1/2 8-1/2 8 5/8 0.75 7 4 9 8 5/8 0.75 7-1/2 5 10 8 3/4 0.88 8-1/2 6 11 8 3/4 0.88 9-1/2 8 13-1/2 8 3/4 0.88 11-3/4 10 16 12 7/8 1 14-1/4 12 19 12 7/8 1 17 14 21 12 1 1.12 18-3/4 16 23-1/2 16 1 1.12 Less