Flange Size to ASME B16.5

(Gives the dimensions and weights for flanges to ASME B16.5.)

Version 1.1.0
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Class Nominal Size Pipe Sch/Wt

ASME B16.5 #150, DN 150, Sch Std:

Outside Diameter, O = 279.4 mm 11.00 inch
Thickness, C 1 = 25.4 mm 1.00 inch
Diameter of Hub at Back
of Flange, X
= 192.0 mm 7.56 inch
Diameter of Hub at Small
End (for Weld Neck), A
= 168.4 mm 6.63 inch
Length Weld Neck, Y 1 = 88.9 mm 3.50 inch
Length Slip On, Y 1 = 39.6 mm 1.56 inch
Bore Weld Neck, B = 154.1 mm 6.07 inch
Bore Slip On, B = 170.7 mm 6.72 inch
Raised Face OD, R = 215.9 mm 8.50 inch
Raised Face Height = 1.5 mm 0.06 inch
Diameter of Bolt Circle = 241.3 mm 9.50 inch
Diameter of Bolt Holes = 22.4 mm 0.88 inch
Number of Bolts = 8
Diameter of Bolts = 3/4"
Length of Stud Bolts = 101.6 mm 4.00 inch
Weight of Weld Neck = 10.7 kg 23.7 lb
Weight of Slip On = 7.4 kg 16.3 lb
Weight of Blind = 11.3 kg 25.0 lb
Weight of Bolts = 1.8 kg 4.0 lb
1 The flange thickness/length INCLUDES the raised face.
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While every effort has been made to offer current and accurate information, errors can occur. This information is provided "as is", with no guarantees of completeness, accuracy or timeliness, and without warranties of any kind, expressed or implied.