Industry Standard Class 75 Welding Neck Flanges
| Item # | Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Base of Hub Diameter (X) | Diameter of Hub at Bevel (A) | Bore (B) | Approximate Weight | Bolt Circle (C) | Number of Holes | Diameter of Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26075WNIS | 26 | 31.50 in | 1.25 in | 28.63 in | 3.00 in | 27.13 in | 26.00 in | Specified by purchaser | 98 lb | 29.63 in | 32 | 1.00 in |
| 28075WNIS | 28 | 33.50 in | 1.25 in | 30.63 in | 3.00 in | 29.13 in | 28.00 in | Specified by purchaser | 105 lb | 31.63 in | 36 | 1.00 in |
| 30075WNIS | 30 | 35.50 in | 1.25 in | 32.63 in | 3.00 in | 31.13 in | 30.00 in | Specified by purchaser | 110 lb | 33.63 in | 36 | 1.00 in |
| 32075WNIS | 32 | 38.25 in | 1.25 in | 35.00 in | 3.25 in | 33.38 in | 32.00 in | Specified by purchaser | 140 lb | 36.13 in | 36 | 1.13 in |
| 34075WNIS | 34 | 40.25 in | 1.25 in | 37.00 in | 3.25 in | 35.38 in | 34.00 in | Specified by purchaser | 150 lb | 38.13 in | 40 | 1.13 in |
| 36075WNIS | 36 | 42.25 in | 1.25 in | 39.00 in | 3.25 in | 37.38 in | 36.00 in | Specified by purchaser | 160 lb | 40.13 in | 40 | 1.13 in |
| 42075WNIS | 42 | 49.00 in | 1.25 in | 45.50 in | 3.50 in | 43.75 in | 42.00 in | Specified by purchaser | 210 lb | 46.75 in | 48 | 1.25 in |
| 48075WNIS | 48 | 55.00 in | 1.25 in | 51.50 in | 3.75 in | 49.75 in | 48.00 in | Specified by purchaser | 240 lb | 52.75 in | 52 | 1.25 in |
| 54075WNIS | 54 | 61.25 in | 1.38 in | 57.75 in | 4.00 in | 56.00 in | 54.00 in | Specified by purchaser | 310 lb | 59.00 in | 64 | 1.25 in |
| 60075WNIS | 60 | 67.25 in | 1.63 in | 63.75 in | 4.38 in | 62.00 in | 60.00 in | Specified by purchaser | 400 lb | 65.00 in | 72 | 1.25 in |
| 66075WNIS | 66 | 74.00 in | 1.88 in | 70.13 in | 4.88 in | 68.00 in | 66.00 in | Specified by purchaser | 560 lb | 71.50 in | 72 | 1.38 in |
| 72075WNIS | 72 | 80.00 in | 2.25 in | 76.13 in | 5.25 in | 74.00 in | 72.00 in | Specified by purchaser | 700 lb | 77.50 in | 80 | 1.38 in |