Flange - Blind, ANSI Class 250, Industry Standard (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 | 38 1/4 | 32 7/16 | 2 13/16 | 28 | 1 1/8 | 34 1/2 | 853 |
28 | 40 3/4 | 34 15/16 | 2 15/16 | 28 | 1 1/8 | 37 | 1022 |
30 | 43 | 37 3/16 | 3 | 28 | 1 1/8 | 39 1/4 | 1168 |
32 | 45 1/4 | 39 7/16 | 3 1/8 | 28 | 1 1/8 | 41 1/2 | 1353 |
34 | 47 1/2 | 41 7/16 | 3 1/4 | 28 | 1 1/8 | 43 1/2 | 1560 |
36 | 50 | 43 11/16 | 3 3/8 | 32 | 2 1/8 | 46 | 1793 |
38 | 52 1/4 | 45 11/16 | 3 7/16 | 32 | 2 1/8 | 48 | 2003 |
40 | 54 1/2 | 47 15/16 | 3 9/16 | 36 | 2 1/8 | 50 1/4 | 2223 |
42 | 57 | 50 7/16 | 3 11/16 | 36 | 2 1/8 | 52 3/4 | 2533 |
44 | 59 1/4 | 52 11/16 | 4 3/4 | 36 | 2 1/8 | 55 | 2793 |
46 | 61 1/2 | 54 15/16 | 4 7/8 | 40 | 2 1/8 | 57 1/4 | 3109 |
48 | 65 | 58 7/16 | 4 | 40 | 2 1/8 | 60 3/4 | 3599 |