ASME B16.48 Class 600
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 51 65 6.4 38 7 0.67 3/4 21 64 80 6.4 38 7 1.04 1 27 70 90 6.4 57 7 1.28 1 1/4 37 79 100 9.7 57 7 1.78 1 1/2 43 92 115 9.7 67 7 2.42 2 55 108 125 9.7 57 7 3.07 2 1/2 67 127 150 12.7 67 7 4.79 3 83 146 170 12.7 67 7 6.13 3 1/2 96 159 185 15.7 76 7 7.89 4 108 191 215 15.7 76 7 11.50 5 135 238 265 19.1 86 7 19.80 6 162 264 290 22.4 86 7 25.77 8 212 318 350 28.4 95 7 41.75 10 265 397 430 35.1 105 7 74.93 12 315 454 490 41.1 105 7 107.25 14 346 489 525 44.5 114 7 130.32 16 397 562 605 50.8 124 7 190.96 18 448 610 655 53....