All dimensions are in inches.
Flat face option available.
Standard Bore will be furnished unless otherwise specified.
EO Flanges can provide ANSI B16.5 Class 300 Welding Neck Flanges, which point of weld from 0.84 to 24 in, hub diameter from 1.5 to 27.63 in, bore from 0.62 to 23.25 in, approximate weight from 2 to 580lbs, etc.
ANSI B16.5 Class 300 Welding Neck Flanges | |||||||||||
Nominal Pipe Size |
Outside Diameter (O) |
Thickness (T) |
Raised Face Diameter (R) |
Length Thru Hub (Y) |
Point of Weld (A) |
Hub Diameter (X) |
Bore (B) |
Approximate Weight (lbs) |
Bolt Circle (C) |
Number of Holes |
Diameter of Holes |
1/2 |
3.75 |
0.56 |
1.38 |
2.06 |
0.84 |
1.5 |
0.62 |
2 |
2.63 |
4 |
0.63 |
3/4 |
4.63 |
0.63 |
1.69 |
2.25 |
1.05 |
1.88 |
0.82 |
3 |
3.25 |
4 |
0.75 |
1 |
4.88 |
0.69 |
2 |
2.44 |
1.32 |
2.13 |
1.05 |
4 |
3.5 |
4 |
0.75 |
1 1/4 |
5.25 |
0.75 |
2.5 |
2.56 |
1.66 |
2.5 |
1.38 |
5 |
3.88 |
4 |
0.75 |
1 1/2 |
6.13 |
0.81 |
2.88 |
2.69 |
1.9 |
2.75 |
1.61 |
7 |
4.5 |
4 |
0.88 |
2 |
6.5 |
0.88 |
3.63 |
2.75 |
2.38 |
3.31 |
2.07 |
9 |
5 |
8 |
0.75 |
2 1/2 |
7.5 |
1 |
4.13 |
3 |
2.88 |
3.94 |
2.47 |
12 |
5.88 |
8 |
0.88 |
3 |
8.25 |
1.13 |
5 |
3.13 |
3.5 |
4.63 |
3.07 |
15 |
6.63 |
8 |
0.88 |
3 1/2 |
9 |
1.19 |
5.5 |
3.19 |
4 |
5.25 |
3.55 |
18 |
7.25 |
8 |
0.88 |
4 |
10 |
1.25 |
6.19 |
3.38 |
4.5 |
5.75 |
4.03 |
25 |
7.88 |
8 |
0.88 |
5 |
11 |
1.38 |
7.31 |
3.88 |
5.56 |
7 |
5.05 |
32 |
9.25 |
8 |
0.88 |
6 |
12.5 |
1.44 |
8.5 |
3.88 |
6.63 |
8.13 |
6.07 |
42 |
10.63 |
12 |
0.88 |
8 |
15 |
1.63 |
10.63 |
4.38 |
8.63 |
10.25 |
7.98 |
67 |
13 |
12 |
1 |
10 |
17.5 |
1.88 |
12.75 |
4.63 |
10.75 |
12.63 |
10.02 |
91 |
15.25 |
16 |
1.13 |
12 |
20.5 |
2 |
15 |
5.13 |
12.75 |
14.75 |
12 |
140 |
17.75 |
16 |
1.25 |
14 |
23 |
2.13 |
16.25 |
5.63 |
14 |
16.75 |
13.25 |
180 |
20.25 |
20 |
1.25 |
16 |
25.5 |
2.25 |
18.5 |
5.75 |
16 |
19 |
15.25 |
250 |
22.5 |
20 |
1.38 |
18 |
28 |
2.38 |
21 |
6.25 |
18 |
21 |
17.25 |
320 |
24.75 |
24 |
1.38 |
20 |
30.5 |
2.5 |
23 |
6.38 |
20 |
23.13 |
19.25 |
400 |
27 |
24 |
1.38 |
22 |
33 |
2.63 |
25.25 |
6.5 |
22 |
25.25 |
21.25 |
465 |
29.25 |
24 |
1.63 |
24 |
36 |
2.75 |
27.25 |
6.63 |
24 |
27.63 |
23.25 |
580 |
32 |
24 |
1.63 |
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