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  • All dimensions are in inches.
  • These flanges will be supplied with a 1/16" raised face unless otherwise specified.
  • Flat face option available.

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ASME B16.47 Welding Neck Flange

ASME B16.47 Class 300 Series A Welding Neck Flanges

ASME B16.47 Welding Neck Flange

ASME B16.47 Class 300 Series A Welding Neck Flanges

ASME B16.47 Welding Neck Flange

ASME B16.47 Class 300 Series A Welding Neck Flanges

ASME B16.47 Welding Neck Flange

ASME B16.47 Class 300 Series A Welding Neck Flanges

ASME B16.47 Welding Neck Flange

ASME B16.47 Class 300 Series A Welding Neck Flanges
Nominal Pipe Size N/A 26 N/A 28 N/A 30 N/A 32 N/A 34
Outside Diameter (O) N/A 38.25 in N/A 40.75 in N/A 43.00 in N/A 45.25 in N/A 47.50 in
Minimum Thickness (T) N/A 3.12 in N/A 3.38 in N/A 3.62 in N/A 3.88 in N/A 4.00 in
Raised Face Diameter (R) N/A 29.50 in N/A 31.50 in N/A 33.75 in N/A 36.00 in N/A 38.00 in
Length Thru Hub (Y) N/A 7.25 in N/A 7.75 in N/A 8.25 in N/A 8.75 in N/A 9.12 in
Hub Diameter (X) N/A 28.38 in N/A 30.50 in N/A 32.56 in N/A 34.69 in N/A 36.88 in
Minimum Fillet Radius (r) N/A 0.38 in N/A 0.44 in N/A 0.44 in N/A 0.44 in N/A 0.50 in
Top of Hub (A) N/A 26.00 in N/A 28.00 in N/A 30.00 in N/A 32.00 in N/A 34.00 in
Bore (B) N/A Specified by purchaser
Approximate Weight N/A 605 lb N/A 745 lb N/A 870 lb N/A 1005 lb N/A 1145 lb
Bolt Circle (C) N/A 34.50 in N/A 37.00 in N/A 39.25 in N/A 41.50 in N/A 43.50 in
Number of Holes N/A 28
Diameter of Holes N/A 1.75 in N/A 1.75 in N/A 1.88 in N/A 2.00 in N/A 2.00 in