Class 2500 Flanges

Class 2500 Flanges Technical Specifications Dimensions of Class 2500 Flanges (ANSI B 16.5) in mm Nominal Pipe size Flange Dia 'O' Dia of Bolt circle 'A' Dia of Bolt Holes 'D' No. of Holes Thk of Flange 'C' Diameter at Weld Bevel Dia of Hub 'E' Length through Hub Bore 'B' Dia of R/F R Depth of Socket F Length of Threading S/O & S/W Y W/NY L/J Y S/O & S/WB L/J B 1/2 15 133.3 88.9 22.2 4 30.2 21.3 42.9 39.7 73.3 39.7 22.3 22.9 34.9 28.6 3/4 20 139.7 95.2 22.2 4 31.7 26.7 50.8 42.9 79.4 42.9 27.7 28.2 42.9 31.7 1 25 158.7 107.9 25.4 4 34.9 33.5 57.1 47.7 88.9 47.7 34.5 35 50.8 34.9 1 1/4 32 184.1 130.2 28.6 4 38.1 42.2 73 52.4 95.2 52.4 43.2 43.7 63.5 38.1 1 1/2 40 203.2 146.0 31.7 4 44.4 48.3 79.4 60.3 111.1 60.3 49.5 50 73.0 44.4 2 50 234.9 171.4 28.6 8 50.8 60.4 95.2 69.8 127 69.8 62 62.5 92.1 50.8 2 1/2 65 266.7 196.8 31.7 8 57.1 73.1 114.3 79.4 142.9 79.4 74.7 75.4 104.8 57.1 3 80 304.8 228.6 34.9 8 66.7 88.9 133.3 92.1 168.3 92.1 90.7 91.4 127.0 63.5 4 100 355.6 273.0 41.3 8 76.2 114.3 165.1 107.9 190.5 107.9 116.1 116.8 157.2 69.8 5 125 419.1 323.8 47.6 8 92.1 141.2 203.2 130.0 128.6 130.0 143.8 144.5 185.7 76.2 6 150 482.6 368.3 54 8 107.9 168.4 234.9 152.4 273 152.4 170.7 171.4 215.9 82.5 8 200 552.4 438.1 54 12 127 219.2 304.8 177.8 317.5 177.8 221.5 222.2 269.9 95.2 10 250 673.1 539.7 66.7 12 165.1 273 374.6 228.6 419.1 228.6 276.3 277.4 323.8 107.9 12 300 762.0 619.1 73.0 12 184.1 323.8 441.3 254 463.5 254.0 327.1 328.2 381.0 120.6