FLANGE COMPARISON TABLES
   
  The following tables are based on the British Standards stated. They are intended as a guide and for further details of flange
thickness and pressure/temperature ratings particularly, please refer to the standards.
   
  Flange Dimensions

D : - Flange Diameter
P : - Bolt Hole Pitch Circle Diameter
d : - Bolt Hole Diameter
t : - Flange Thickness Including Raised Face
R : - Raised Face Diameter
f : - Raised Face Height
N : - Number of Bolt Holes

The Flange thickness given is for Carbon Steel Flanges.

Cast Iron Flanges are generally thicker.
   
  Flange Comparison Tables
   
 
Sizes
Printable PDF's
1/2” & 15mm
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3/4" & 20mm
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1" & 25mm
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1 1/4" & 32mm
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1 1/2 ” & 40mm
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2" & 50mm
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2 1/2” & 65mm
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3" & 80mm
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4" & 100mm
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5" & 125mm
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6" & 150mm
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8" & 200mm
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10" & 250mm
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12" & 300mm
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14" & 350mm
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15" & 400mm
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18" & 450mm
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20" & 500mm
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24" & 600mm
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