Flange – Blind, ANSI Class 350, 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 |
32 3/4 |
29 1/2 |
2 3/4 |
28 |
1 1/8 |
30 5/8 |
580 |
28 |
34 3/4 |
31 1/2 |
2 7/8 |
28 |
1 1/8 |
32 5/8 |
750 |
30 |
37 |
33 3/4 |
3 |
32 |
1 1/8 |
34 7/8 |
890 |
32 |
39 |
35 3/4 |
3 1/4 |
36 |
1 1/8 |
36 7/8 |
1050 |
34 |
41 |
37 3/4 |
3 3/8 |
40 |
1 1/8 |
38 7/8 |
1225 |
36 |
43 3/4 |
40 1/4 |
3 5/8 |
40 |
1 1/4 |
41 1/2 |
1500 |
38 |
45 3/4 |
42 1/4 |
3 3/4 |
40 |
1 1/4 |
43 1/2 |
1700 |
40 |
47 3/4 |
44 1/4 |
4 |
44 |
1 1/4 |
45 1/2 |
1925 |
42 |
50 |
46 1/2 |
4 1/8 |
48 |
1 1/4 |
47 3/4 |
2225 |
44 |
52 3/4 |
48 7/8 |
4 3/8 |
44 |
1 3/8 |
50 1/4 |
2625 |
46 |
54 3/4 |
50 7/8 |
4 3/4 |
48 |
1 3/8 |
52 1/4 |
2950 |
48 |
56 3/4 |
52 7/8 |
4 3/4 |
48 |
1 3/8 |
54 1/4 |
3300 |