Industry Standard Class 175 Blind Flanges

ProductsNominal Pipe SizeOutside Diameter (O)Thickness (T)Raised Face Diameter (R)Approximate Weight (lbs)Bolt Circle (C)Number of HolesDiameter of Bolt Holes
26175BDIS26 31.50 1.78 29.00 405 29.88 28 0.88
28175BDIS28 33.50 2.00 31.00 490 31.88 28 0.88
30175BDIS30 35.75 2.13 33.25 590 34.13 36 0.88
32175BDIS32 37.75 2.25 35.25 700 36.13 36 0.88
34175BDIS34 40.25 2.38 37.38 840 38.38 36 1.00
36175BDIS36 42.25 2.50 39.38 970 40.3836 1.00
38175BDIS38 44.25 2.63 41.38 1125 42.38 36 1.00
40175BDIS40 46.25 2.75 43.38 1300 44.38 401.00
42175BDIS42 49.00 2.88 45.75 1500 46.88 401.13
44175BDIS44 51.00 3.00 47.751700 48.88 401.13
46175BDIS46 53.00 3.1349.75 1925 50.88 401.13
48175BDIS48 55.00 3.3851.752225 52.88 44 1.13
50175BDIS50 57.00 3.38 53.75 2400 54.88 44 1.13
52175BDIS52 59.50 3.63 56.00 2800 57.25 44 1.25
54175BDIS54 61.50 3.63 58.00 3000 59.25 44 1.25
60175BDIS60 67.50 4.00 64.00 4000 65.25 48 1.25
66175BDIS6673.504.38 70.00 5175 71.25 56 1.25
72175BDIS72 80.00 4.75 76.50 665077.75 641.25
84175BDIS84 94.005.50 90.125 1081591.50 72 1.375
96175BDIS96 106.00 6.125 102.125 15325103.50 88 1.375