ASME B16.47 Class 400 Series B Welding Neck Flanges

ProductsNominal Pipe SizeOutside 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 (lbs)Bolt Circle (C)Number of HolesDiameter of Holes
26400WNSB 2633.50 3.5028.005.88 27.12 0.44 26.00Specified by purchaser360 30.75 28 1.50
28400WNSB2836.00 3.7530.006.25 29.12 0.50 28.00Specified by purchaser450 33.00 24 1.62
30400WNSB3038.25 4.0032.256.69 31.25 0.50 30.00 Specified by purchaser530 35.25 281.62
32400WNSB3240.754.2534.387.0633.25 0.50 32.00Specified by purchaser 635 37.50281.75
34400WNSB3442.75 4.3836.507.3835.38 0.56 34.00Specified by purchaser 690 39.50 32 1.75
36400WNSB3645.50 4.69 38.627.88 37.50 0.56 36.00Specified by purchaser 855 42.00281.88