ASME B16.48 Class 150
Pipe flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. A figure-8 blank (also called a Spectacle Blind Flange) is a pressure-retaining plate with one solid end and one open end connected with a web or tie bar. NPS Inside Diameter, B Outside Diameter, O Centerline Dimension, A Thick-ness, t Web Width, W Approximate Weight kgs 1/2 16 45 60 3.0 38 2 0.22 3/4 21 54 70 3.0 38 2 0.29 1 27 64 80 3.0 38 2 0.38 1 1/4 42 73 90 6.4 38 2 0.64 1 1/2 48 83 100 6.4 38 2 0.80 2 61 102 120 6.4 51 2 1.20 2 1/2 73 107 140 6.4 51 2 1.47 3 89 133 150 6.4 64 2 1.88 3 1/2 102 159 175 9.7 64 2 3.50 4 114 172 190 9.7 64 2 4.03 5 141 194 215 9.7 76 2 4.89 6 168 219 240 12.7 76 2 7.18 8 219 276 300 12.7 76 2 11.03 10 273 337 360 15.7 102 2 18.88 12 324 406 430 19.1 102 2 32.39 14 356 448 475 19.1 108 2 39.63 16 406 511 460 22.4 108 2 59.95 18 457 546 580 22.4 114 2 63.9...