ASME B16.47 Class 75 Series B Welding Neck Flanges

Nominal Pipe Size Outside Diameter (O) Minimum Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight Bolt Circle (C) Number of Holes Diameter of Holes
26 30.00 mm 1.31 mm 27.75 mm 2.31 mm 26.62 mm 0.31 mm 26.06 mm Specified by purchaser 80 lb 28.50 mm 36 0.75 mm
28 32.00 mm 1.31 mm 29.75 mm 2.44 mm 28.62 mm 0.31 mm 28.06 mm Specified by purchaser 85 lb 30.50 mm 40 0.75 mm
30 34.00 mm 1.31 mm 31.75 mm 2.56 mm 30.62 mm 0.31 mm 30.06 mm Specified by purchaser 90 lb 32.50 mm 44 0.75 mm
32 36.00 mm 1.38 mm 33.75 mm 2.75 mm 32.62 mm 0.31 mm 32.06 mm Specified by purchaser 105 lb 34.50 mm 48 0.75 mm
34 38.00 mm 1.38 mm 35.75 mm 2.88 mm 34.62 mm 0.31 mm 34.06 mm Specified by purchaser 110 lb 36.50 mm 52 0.75 mm
36 40.69 mm 1.44 mm 38.00 mm 3.38 mm 36.81 mm 0.38 mm 36.06 mm Specified by purchaser 145 lb 39.06 mm 40 0.88 mm
38 42.69 mm 1.50 mm 40.00 mm 3.50 mm 38.81 mm 0.38 mm 38.06 mm Specified by purchaser 160 lb 41.06 mm 40 0.88 mm
40 44.69 mm 1.50 mm 42.00 mm 3.62 mm 40.81 mm 0.38 mm 40.06 mm Specified by purchaser 170 lb 43.06 mm 44 0.88 mm
42 46.69 mm 1.56 mm 44.00 mm 3.75 mm 42.81 mm 0.38 mm 42.06 mm Specified by purchaser 185 lb 45.06 mm 48 0.88 mm
44 49.25 mm 1.69 mm 46.25 mm 4.12 mm 44.88 mm 0.38 mm 44.06 mm Specified by purchaser 230 lb 47.38 mm 36 1.00 mm
46 51.25 mm 1.75 mm 48.25 mm 4.25 mm 46.88 mm 0.38 mm 46.06 mm Specified by purchaser 245 lb 49.38 mm 40 1.00 mm
48 53.25 mm 1.81 mm 50.25 mm 4.38 mm 48.88 mm 0.38 mm 48.06 mm Specified by purchaser 270 lb 51.38 mm 44 1.00 mm
50 55.25 mm 1.88 mm 52.25 mm 4.56 mm 50.94 mm 0.38 mm 50.06 mm Specified by purchaser 290 lb 53.38 mm 44 1.00 mm
52 57.38 mm 1.88 mm 54.25 mm 4.75 mm 52.94 mm 0.38 mm 52.06 mm Specified by purchaser 310 lb 55.50 mm 48 1.00 mm
54 59.38 mm 1.94 mm 56.25 mm 4.94 mm 55.00 mm 0.38 mm 54.06 mm Specified by purchaser 340 lb 57.50 mm 48 1.00 mm
56 62.00 mm 2.00 mm 58.50 mm 5.31 mm 57.12 mm 0.44 mm 56.06 mm Specified by purchaser 400 lb 59.88 mm 40 1.12 mm
58 64.00 mm 2.06 mm 60.50 mm 5.44 mm 59.12 mm 0.44 mm 58.06 mm Specified by purchaser 430 lb 61.88 mm 44 1.12 mm
60 66.00 mm 2.19 mm 62.50 mm 5.69 mm 61.12 mm 0.44 mm 60.06 mm Specified by purchaser 475 lb 63.88 mm 44 1.12 mm