ASME B16.5 Welding Neck Flanges
WN Flanges:
ASME B16.5 Welding Neck Flanges :
Dimension B corresponds to the pipe inside diameter.Values quoted assume 40S/Standard wall thickness.
Weights are based on manufacturer’s data and are approximate.
Flat face flanges may be provided at full thickness,C,or with raised face removed (the latter is nonstandard).
Specification:
Pipe Welding Neck Flange |
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
||||||||
Nominal |
Outside Diameter |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
|
Overall |
Inside |
Flange |
Overall |
Diameter |
Hub |
Face |
Number |
Bolt Hole |
Diameter of Circle |
|||
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
in |
||
1/2 |
0.84 |
3.5 |
0.62 |
0.44 |
1.88 |
0.84 |
1.19 |
1.38 |
4 |
0.62 |
2.38 |
|
21.3 |
88.9 |
15.7 |
11.2 |
47.8 |
21.3 |
30.2 |
35 |
15.7 |
60.45 |
|||
3/4 |
1.05 |
3.88 |
0.82 |
0.5 |
2.06 |
1.05 |
1.5 |
1.69 |
4 |
0.62 |
2.75 |
|
26.7 |
98.6 |
20.8 |
12.7 |
52.3 |
26.7 |
38.1 |
42.9 |
15.7 |
69.85 |
|||
1 |
1.315 |
4.25 |
1.05 |
0.56 |
2.19 |
1.32 |
1.94 |
2 |
4 |
0.62 |
3.12 |
|
33.4 |
108 |
26.7 |
14.2 |
55.6 |
33.5 |
49.3 |
50.8 |
15.7 |
79.25 |
|||
1 1/4 |
1.66 |
4.62 |
117.3 |
0.62 |
15.7 |
57.15 |
2.31 |
2.5 |
4 |
0.62 |
3.5 |
|
42.2 |
117.3 |
1.38 |
15.7 |
2.25 |
1.66 |
58.7 |
63.5 |
15.7 |
88.9 |
|||
1 1/2 |
1.9 |
5 |
1.61 |
0.69 |
2.44 |
1.9 |
2.56 |
2.88 |
4 |
0.62 |
3.88 |
|
48.3 |
127 |
40.9 |
17.5 |
62 |
48.3 |
65 |
73.15 |
15.7 |
98.6 |
|||
2 |
2.375 |
6 |
2.07 |
0.75 |
2.5 |
2.38 |
3.06 |
3.62 |
4 |
0.75 |
4.75 |
|
60.3 |
152.4 |
52.6 |
19.1 |
63.5 |
60.45 |
77.7 |
91.9 |
19.1 |
120.7 |
|||
2 1/2 |
2.875 |
7 |
2.47 |
0.88 |
2.75 |
2.88 |
3.56 |
4.12 |
4 |
0.75 |
5.5 |
|
73 |
177.8 |
62.7 |
22.4 |
69.85 |
73.15 |
90.4 |
104.6 |
19.1 |
139.7 |
|||
3 |
3.5 |
7.5 |
3.07 |
0.94 |
2.75 |
3.5 |
4.25 |
5 |
4 |
0.75 |
6 |
|
88.9 |
190.5 |
78 |
23.9 |
69.85 |
88.9 |
108 |
127 |
19.1 |
152.4 |
|||
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