Boltex Reference Manual

indstandard_slipon_blind

Industry Standard - Slip-On & Blind Flanges

Class 175

Nominal Size NPS Outside diameter of Flange Diameter of Hub at Base Outside Diameter of Flange Diameter of Hub at Base Thickness of Flange Length thru Hub Diameter of Raised Face Diameter of Bolt Circle No. Of Bolt Holes Diameter of Bolt Holes
SOF BLIND
O X O X C C C Y R
I.D VESSELS O.D. VESSELS   I.D. VESS. O.D. VESS.     I.D. VESS. O.D. VESS.    
26 in. 32.00 28.25 31.50 27.62 1.38 1.81 1.88 2.75 29.00 30.50 29.88 28 0.88
mm. 812.8 717.5 800.1 701.5 35.1 46.0 47.8 69.8 736.6 774.7 759.0 22.4
28 in. 34.00 30.25 33.50 29.62 1.38 1.94 2.00 2.75 31.00 32.50 31.88 28 0.88
mm. 863.6 768.3 850.9 752.3 35.1 49.3 50.8 69.8 787.4 825.5 809.8 22.4
30 in. 36.50 32.75 35.75 31.88 1.38 2.12 2.12 2.75 32.25 35.00 34.12 36 0.88
mm. 927.1 831.8 908.0 809.8 35.1 53.8 53.8 69.8 844.5 889.0 866.6 22.4
32 in. 38.50 34.75 37.75 33.88 1.38 2.25 2.25 2.75 35.25 37.00 36.12 36 0.88
mm. 977.9 882.6 958.8 860.6 35.1 57.1 57.1 69.8 895.3 939.8 817.4 22.4
34 in. 41.00 36.75 40.25 35.88 1.75 2.38 2.38 3.38 37.38 39.25 38.38 36 1.00
mm. 1041.4 933.4 1022.3 911.4 44.4 60.5 60.5 85.9 949.5 996.9 974.9 25.4
36 in. 43.00 38.75 42.25 37.88 1.75 2.50 2.50 3.38 39.38 41.25 40.38 36 1.00
mm. 1092.2 984.3 1073.1 962.2 44.4 63.5 63.5 85.9 1000.3 1047.8 1025.7 25.4
38 in. 45.25 41.00 44.25 39.88 2.00 2.62 2.62 3.75 41.38 43.50 42.38 36 1.00
mm. 1149.3 1041.4 1124.0 1013.0 50.8 66.5 66.5 95.3 1051.1 1104.9 1076.5 25.4
40 in. 47.25 43.00 46.25 41.88 2.00 2.75 2.75 4.00 43.38 45.50 44.38 40 1.00
mm. 1200.1 1092.2 1174.8 1063.8 50.8 69.8 69.8 101.6 1101.9 1155.7 1127.3 25.4
42 in. 49.75 45.00 49.00 44.12 2.38 2.88 2.88 4.38 45.75 47.75 46.88 40 1.12
mm. 1263.6 1143.0 1244.6 1120.6 60.5 73.2 73.2 111.3 1162.1 1212.8 1190.8 28.4
44 in. 51.75 47.00 51.00 46.12 2.38 3.00 3.00 4.38 47.75 49.75 48.88 40 1.12
mm. 1314.4 1193.8 1295.4 1171.4 60.5 76.2 76.2 111.3 1212.8 1263.6 1241.6 28.4
46 in. 54.00 49.25 53.00 48.12 2.38 3.12 3.12 4.62 49.75 52.00 50.88 40 1.12
mm. 1371.6 1250.9 1346.2 1222.2 60.5 79.2 79.2 117.3 1263.6 1320.8 1292.4 28.4
48 in. 56.00 51.25 55.00 50.12 2.62 3.25 3.38 4.88 51.75 54.00 52.88 44 1.12
mm. 1422.4 1301.8 1397.0 1273.0 66.5 82.5 85.9 124.0 1314.4 1371.6 1343.2 28.4
50 in. 58.25 53.50 57.00 52.12 2.62 3.38 3.38 4.88 53.75 56.50 54.88 44 1.12
mm. 1479.6 1358.9 1447.8 1323.8 66.5 85.9 85.9 124.0 1365.3 1435.1 1394.0 28.4
52 in. 60.75 55.50 59.50 54.25 3.00 3.50 3.62 5.38 56.00 58.50 57.25 44 1.25
mm. 1543.1 1409.7 1511.3 1377.9 76.2 88.9 91.9 136.7 1422.4 1485.9 1254.1 31.8
54 in. 63.00 57.75 61.50 56.25 3.00 3.62 3.62 5.38 58.00 60.75 59.25 44 1.25
mm. 1600.2 1466.8 1562.1 1428.8 76.2 91.9 91.9 136.7 1473.2 1543.1 1504.9 31.8
60 in. 69.00 63.75 67.50 62.25 3.12 4.00 4.00 5.88 64.00 66.75 65.25 48 1.25
mm. 1752.6 1619.3 1714.5 1581.1 79.2 101.6 101.6 149.4 1625.6 1695.4 1657.3 31.8
66 in. 75.00 69.75 73.50 68.50 4.00 4.38 4.38 6.88 70.00 72.75 71.25 56 1.25
mm. 1905.0 1771.6 1866.9 1739.9 101.6 111.3 111.3 174.8 1778.0 1847.8 1809.8 31.8
72 in. 81.00 75.75 80.00 74.50 5.00 5.00 5.00 8.00 76.50 78.75 77.75 64 1.25
mm. 2057.4 1924.1 2032.0 1892.3 127.0 127.0 127.0 203.2 1943.1 2000.3 1974.8 31.8