ASME B16.47 Class 75 Series B Welding Neck Flanges

ProductsNominal Pipe SizeMinimum 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
2675WNSB26 1.31 27.75 2.31 26.62 0.3126.06 Specified by purchaser 80 28.5036 0.75
2875WNSB281.31 29.75 2.44 28.62 0.3128.06 Specified by purchaser 85 30.5040 0.75
3075WNSB301.31 31.75 2.56 30.62 0.3130.06 Specified by purchaser 90 32.5044 0.75
3275WNSB321.38 33.75 2.75 32.62 0.3132.06 Specified by purchaser 105 34.5048 0.75
3475WNSB 341.38 35.75 2.8834.62 0.3134.06 Specified by purchaser 110 36.50 52 0.75
3675WNSB361.44 38.00 3.38 36.81 0.38 36.06Specified by purchaser 14539.06400.88
3875WNSB381.50 40.00 3.50 38.81 0.38 38.06Specified by purchaser 160 41.06400.88
4075WNSB 401.50 42.00 3.62 40.81 0.38 40.06 Specified by purchaser 170 43.0644 0.88
4275WNSB421.56 44.00 3.75 42.810.38 42.06 Specified by purchaser 185 45.06 48 0.88
4475WNSB441.69 46.25 4.12 44.88 0.38 44.06 Specified by purchaser 230 47.38 36 1.00
4675WNSB461.75 48.25 4.25 46.880.38 46.06 Specified by purchaser 245 49.3840 1.00
4875WNSB481.81 50.25 4.38 48.88 0.38 48.06 Specified by purchaser 270 51.3844 1.00
5075WNSB501.88 52.25 4.5650.94 0.38 50.06Specified by purchaser 290 53.38 44 1.00
5275WNSB521.88 54.25 4.75 52.94 0.38 52.06Specified by purchaser 310 55.50 48 1.00
5475WNSB541.94 56.25 4.94 55.000.38 54.06 Specified by purchaser 340 57.50 48 1.00
5675WNSB562.00 58.50 5.31 57.12 0.44 56.06 Specified by purchaser 400 59.88 40 1.12
5875WNSB582.06 60.505.44 59.120.44 58.06 Specified by purchaser 430 61.88 44 1.12
6075WNSB602.19 62.50 5.69 61.12 0.44 60.06 Specified by purchaser 475 63.8844 1.12