• ANSI 150 Welding Neck Flange
  • ASME Series B 75
  • All dimensions are in inches
  • These flanges will be furnished with a 1/16" raised face unless otherwise specified.
  • Flat face option available.
  • Standard Bore will be furnished unless otherwise specified.
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Item #

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Raised Face Diameter (R)

Length Thru Hub (Y)

Point of Weld (A)

Hub Diameter (X)

Bore (B)

Approximate Weight (lbs)

Bolt Circle (C)

Number of Holes

Diameter of Holes

N/A 1/2 N/A 3.50 N/A 0.44 N/A 1.38 N/A 1.88 N/A 0.84 N/A 1.19 N/A 0.62 N/A 2 N/A 2.38 N/A 4 N/A 0.63
N/A 3/4 N/A 3.88 N/A 0.50 N/A 1.69 N/A 2.06 N/A 1.05 N/A 1.50 N/A 0.82 N/A 2 N/A 2.75 N/A 4 N/A 0.63
N/A 1 N/A 4.25 N/A 0.56 N/A 2.00 N/A 2.19 N/A 1.32 N/A 1.94 N/A 1.05 N/A 3 N/A 3.13 N/A 4 N/A 0.63
N/A 1 1/4 N/A 4.63 N/A 0.63 N/A 2.50 N/A 2.25 N/A 1.66 N/A 2.31 N/A 1.38 N/A 3 N/A 3.50 N/A 4 N/A 0.63
N/A 1 1/2 N/A 5.00 N/A 0.69 N/A 2.88 N/A 2.44 N/A 1.90 N/A 2.56 N/A 1.61 N/A 4 N/A 3.88 N/A 4 N/A 0.63
N/A 2 N/A 6.00 N/A 0.75 N/A 3.63 N/A 2.50 N/A 2.38 N/A 3.06 N/A 2.07 N/A 6 N/A 4.75 N/A 4 N/A 0.75
N/A 2 1/2 N/A 7.00 N/A 0.88 N/A 4.13 N/A 2.75 N/A 2.88 N/A 3.56 N/A 2.47 N/A 8 N/A 5.50 N/A 4 N/A 0.75
N/A 3 N/A 7.50 N/A 0.94 N/A 5.00 N/A 2.75 N/A 3.50 N/A 4.25 N/A 3.07 N/A 10 N/A 6.00 N/A 4 N/A 0.75
N/A 3 1/2 N/A 8.50 N/A 0.94 N/A 5.50 N/A 2.81 N/A 4.00 N/A 4.81 N/A 3.55 N/A 12 N/A 7.00 N/A 8 N/A 0.75
N/A 4 N/A 9.00 N/A 0.94 N/A 6.19 N/A 3.00 N/A 4.50 N/A 5.31 N/A 4.03 N/A 15 N/A 7.50 N/A 8 N/A 0.75
N/A 5 N/A 10.00 N/A 0.94 N/A 7.31 N/A 3.50 N/A 5.56 N/A 6.44 N/A 5.05 N/A 19 N/A 8.50 N/A 8 N/A 0.88
N/A 6 N/A 11.00 N/A 1.00 N/A 8.50 N/A 3.50 N/A 6.63 N/A 7.56 N/A 6.07 N/A 24 N/A 9.50 N/A 8 N/A 0.88
N/A 8 N/A 13.50 N/A 1.13 N/A 10.63 N/A 4.00 N/A 8.63 N/A 9.69 N/A 7.98 N/A 39 N/A 11.75 N/A 8 N/A 0.88
N/A 10 N/A 16.00 N/A 1.19 N/A 12.75 N/A 4.00 N/A 10.75 N/A 12.00 N/A 10.02 N/A 52 N/A 14.25 N/A 12 N/A 1.00
N/A 12 N/A 19.00 N/A 1.25 N/A 15.00 N/A 4.50 N/A 12.75 N/A 14.38 N/A 12.00 N/A 80 N/A 17.00 N/A 12 N/A 1.00
N/A 14 N/A 21.00 N/A 1.38 N/A 16.25 N/A 5.00 N/A 14.00 N/A 15.75 N/A 13.25 N/A 110 N/A 18.75 N/A 12 N/A 1.13
N/A 16 N/A 23.50 N/A 1.44 N/A 18.50 N/A 5.00 N/A 16.00 N/A 18.00 N/A 15.25 N/A 140 N/A 21.25 N/A 16 N/A 1.13
N/A 18 N/A 25.00 N/A 1.56 N/A 21.00 N/A 5.50 N/A 18.00 N/A 19.88 N/A 17.25 N/A 150 N/A 22.75 N/A 16 N/A 1.25
N/A 20 N/A 27.50 N/A 1.69 N/A 23.00 N/A 5.69 N/A 20.00 N/A 22.00 N/A 19.25 N/A 180 N/A 25.00 N/A 20 N/A 1.25
N/A 22 N/A 29.50 N/A 1.81 N/A 25.25 N/A 5.88 N/A 22.00 N/A 24.25 N/A 21.25 N/A 225 N/A 27.25 N/A 20 N/A 1.38
N/A 24 N/A 32.00 N/A 1.88 N/A 27.25 N/A 6.00 N/A 24.00 N/A 26.13 N/A 23.25 N/A 260 N/A 29.50 N/A 20 N/A 1.38
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