Industry Standard Class 175 Welding Neck Flanges

Products Nominal Pipe SizeOutside Diameter (O)Thickness (T)Raised Face Diameter (R)Length Thru Hub (Y)Base of Hub Diameter (X)Diameter of Hub at Bevel (A)Bore (B)Approximate Weight (lbs)Bolt Circle (C)Number of HolesDiameter of Bolt Holes
26175WNIS26 31.50 1.38 29.00 3.38 27.63 Specified by purchaser Specified by purchaser 120 29.88 28 0.88
28175WNIS28 33.50 1.38 31.003.38 29.63 Specified by purchaser Specified by purchaser Specified by purchaser 130 31.88 28 0.88
30175WNIS30 35.75 1.3833.25 3.63 31.88 Specified by purchaser Specified by purchaser 150 34.1336 0.88
32175WNIS32 37.75 1.38 35.25 3.6333.88 Specified by purchaser Specified by purchaser 160 36.13 36 0.88
34175WNIS3440.25 1.5037.38 3.75 35.88 Specified by purchaser Specified by purchaser 195 38.38 36 1.00
36175WNIS36 42.25 1.50 39.38 3.75 37.88 Specified by purchaser Specified by purchaser 205 40.38 36 1.00
38175WNIS38 44.25 1.7541.38 4.13 39.88Specified by purchaser Specified by purchaser 245 42.38 36 1.00
40175WNIS40 46.25 1.7543.38 4.13 41.88 Specified by purchaser Specified by purchaser 25544.38 40 1.00
42175WNIS42 49.00 2.00 45.75 4.50 44.13 Specified by purchaser Specified by purchaser 340 46.88 40 1.13
44175WNIS44 51.002.0047.75 4.50 46.13 Specified by purchaser Specified by purchaser 360 48.88 40 1.13
46175WNIS46 53.00 2.00 49.75 4.50 48.13 Specified by purchaser Specified by purchaser 375 50.8840 1.13
48175WNIS48 55.00 2.25 51.75 4.88 50.13 Specified by purchaser Specified by purchaser 430 52.88 44 1.13
50175WNIS50 57.00 2.25 53.75 4.88 52.13 Specified by purchaser Specified by purchaser 450 54.88 44 1.13
52175WNIS52 59.50 2.63 56.00 5.38 54.25 Specified by purchaser Specified by purchaser 560 57.25 44 1.25
54175WNIS54 61.50 2.63 58.00 5.38 56.25 Specified by purchaser Specified by purchaser 580 59.25 44 1.25
60175WNIS60 67.50 2.75 64.00 5.75 62.25 Specified by purchaser Specified by purchaser 680 65.25 48 1.25
66175WNIS66 73.50 3.13 70.00 6.13 68.50 Specified by purchaser Specified by purchaser 830 71.25 56 1.25
72175WNIS72 80.00 3.63 76.50 6.63 74.50 Specified by purchaser Specified by purchaser 1075 77.75 64 1.25
84175WNIS84 94.00 3.00 90.125 6.63 88.00 Specified by purchaser Specified by purchaser 1550 91.50 72 1.375
96175WNIS96 106.00 3.50 102.125 7.50 100.00Specified by purchaser Specified by purchaser 1950 103.50 88 1.375