Flange – Blind (For Weld Neck Flange), ANSI Class 75, Industry Standard, 1/16″ Raised Face (in)
- Industry Standard Flanges have no national standard code or are they covered by any governing body.
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
| Pipe Size(NPS) | OutsideDiameter of Flange A | Diameterof Raised Face B | Thicknessof Flange C | Numberof Bolt Holes | Diameterof Bolt Holes | BoltCircle Diameter P | Approx.Weight (lb) |
|---|---|---|---|---|---|---|---|
| 26 | 31 1/2 | 28 5/8 | 1 1/4 | 32 | 1 | 29 5/8 | 265 |
| 28 | 33 1/2 | 30 5/8 | 1 1/4 | 36 | 1 | 31 5/8 | 300 |
| 30 | 35 1/2 | 32 5/8 | 1 3/8 | 36 | 1 | 33 5/8 | 370 |
| 32 | 38 1/4 | 35 | 1 1/2 | 36 | 1 1/8 | 36 1/8 | 470 |
| 34 | 40 1/4 | 37 | 1 1/2 | 40 | 1 1/8 | 38 1/8 | 520 |
| 36 | 42 1/4 | 39 | 1 5/8 | 40 | 1 1/8 | 40 1/8 | 620 |
| 42 | 49 | 45 1/2 | 1 7/8 | 48 | 1 1/4 | 46 3/4 | 970 |
| 48 | 55 | 51 1/2 | 2 1/8 | 52 | 1 1/4 | 53 3/4 | 1375 |
| 54 | 61 1/4 | 57 3/4 | 2 3/8 | 64 | 1 1/4 | 59 | 1925 |
| 60 | 67 1/4 | 63 3/4 | 2 5/8 | 72 | 1 1/4 | 65 | 2575 |
| 66 | 74 | 70 1/8 | 2 7/8 | 72 | 1 3/8 | 71 1/2 | 3400 |
| 72 | 80 | 76 1/8 | 3 1/8 | 80 | 1 3/8 | 77 1/2 | 4350 |