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Bronze Flanges - ASME/ANSI 300 lb

Flange diameters, thickness, bolt circles, numbers and diameter of bolts for ASME/ANSI B16.15 - Cast Bronze Threaded Fittings - 300 lb Bronze - Flanges with plain faces.

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ASME/ANSI B16.15 - Cast Bronze Threaded Fittings - 300 lb bronze flanges have plain faces with two concentric gasket retaining grooves between the port and the holes.

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ANSI 300 lb Bronze Flanges
Pipe Size (inches)1/23/411 1/41 1/222 1/233 1/24568
Diameter of Flange
(inches)
3 3/4 4 5/8 4 7/8 5 1/4 6 1/8 6 1/2 7 1/2 8 1/4 9 10 11 12 1/2 15
Thickness of Flange
(inches)
1/2 17/32 19/32 5/8 11/16 3/4 13/16 29/32 31/32 1 1/16 1 1/8 1 3/16 1 3/8
Diameter of Bolt Circle
(inches)
2 5/8 3 1/4 3 1/2 3 7/8 4 1/2 5 5 7/8 6 5/8 7 1/4 7 7/8 9 1/4 10 5/8 13
Numbers of Bolts 4 4 4 4 4 4 8 8 8 8 8 12 12
Diameter of Bolts
(inches)
1/2 5/8 5/8 5/8 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 7/8
  • 1 inch = 25.4 mm
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