Flange - Blind, ANSI Class 75, Industry Standard (For SOF) (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) | Outside Diameter of Flange
A | Diameter of Raised Face
B | Thickness of Flange
C | Number of Bolt Holes
| Diameter of Bolt Holes
| Bolt Circle Diameter
P | Approx Weight
(lb) |
|---|---|---|---|---|---|---|---|
| 26 | 33 | 30 | 1 1/4 | 32 | 1 | 31 | 290 |
| 28 | 35 | 32 | 1 3/8 | 36 | 1 | 33 | 360 |
| 30 | 37 | 34 | 1 3/8 | 36 | 1 | 35 | 405 |
| 32 | 39 1/2 | 36 1/4 | 1 1/2 | 40 | 1 1/8 | 37 3/8 | 500 |
| 34 | 41 1/2 | 38 1/4 | 1 5/8 | 40 | 1 1/8 | 39 3/8 | 600 |
| 36 | 43 1/2 | 40 1/4 | 1 5/8 | 44 | 1 1/8 | 41 3/8 | 660 |
| 42 | 50 | 46 1/2 | 1 7/8 | 48 | 1 1/4 | 47 3/4 | 1000 |
| 48 | 56 | 52 1/2 | 2 1/8 | 56 | 1 1/4 | 53 3/4 | 1450 |
| 54 | 62 1/2 | 59 | 2 3/8 | 68 | 1 1/4 | 60 1/4 | 2000 |
| 60 | 68 1/2 | 65 | 2 5/8 | 72 | 1 1/4 | 66 1/4 | 2675 |
| 66 | 75 1/2 | 71 5/8 | 2 7/8 | 72 | 1 3/8 | 73 | 3550 |
| 72 | 81 1/2 | 77 5/8 | 3 1/8 | 80 | 1 3/8 | 79 | 4500 |