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ANSI B16.5
Weld Neck Flanges
Class 400 lb
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| Pipe |
|
Flange Data |
Hub Data |
Raised Face |
Drilling Data |
Weight |
| Nominal Pipe Size |
|
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
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Flange
Thinckness
min |
|
Diameter at Weld Bevel |
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|
Diameter of Circle of Holes |
|
| Outside Diameter |
|
Overall Diameter |
Inside Diameter |
Overall |
Hub |
Face Diameter |
Number of Holes |
Bolt Hole
Diameter |
kg/ piece |
inch
mm |
|
inch
mm |
inch
mm |
inch
mm |
inch mm |
inch
mm |
inch
mm |
inch
mm |
inch
mm |
inch
mm |
|
| ½ |
0.840 21.30 |
3.750 95.30 |
To be specified
by
Purchaser |
0.560 14.20 |
2.060 52.30 |
0.840
21,30 |
1.500 38.10 |
1.380 35.00 |
4 |
0.620 15.70 |
2.620
66.55 |
0.87 |
| ¾ |
1.050 26.70 |
4.620 117.3 |
0 620 15.70 |
2.250 57.15 |
1.050 26.70 |
1 880 47.80 |
1.690 42.90 |
4 |
0.750 19.10 |
3.250
82.60 |
1.45 |
| 1 |
1.315 33.40 |
4.880 124.0 |
0 690 17.50 |
2.440 62.00 |
1.320 33.50 |
2.120 53.80 |
2.000 50.80 |
4 |
0.750 19.10 |
3.500
88.90 |
1.76 |
| 1¼ |
1.660 42.20 |
5.250 133.4 |
0.810 20.60 |
2.620 66.55 |
1.660 42.20 |
2.500 63.50 |
2.500 63.50 |
4 |
0.750 19.10 |
3.880
98.60 |
2.49 |
| 1½ |
1.900 48.30 |
6.120 155.4 |
0.880 22.40 |
2.750 69.85 |
1.900 48.30 |
2.750 69.85 |
2.880 73.15 |
4 |
0.880 22.40 |
4.500
114.3 |
3.49 |
| 2 |
2.375 60.30 |
6.500 165.1 |
1.000 25.40 |
2.880 73.15 |
2.380 60.45 |
3.310 84.10 |
3.620 91.90 |
8 |
0.750 19.10 |
5.000
127.0 |
4.36 |
| 2½ |
2.875 73.00 |
7.500 190.5 |
1.120 28.40 |
3.120 79.25 |
2.880 73.15 |
3.940 100.1 |
4.120 104.6 |
8 |
0.880 22.40 |
5.880
149.4 |
6.43 |
| 3 |
3.500 88.90 |
8.250 209.6 |
1.250 31.75 |
3.250 82.60 |
3.500 88.90 |
4.620 117.3 |
5.000 127.0 |
8 |
0.880 22.40 |
6.620
168.1 |
8.53 |
| 3½ |
4.000 101.6 |
9.000 228.6 |
1.380 35.10 |
3.380 85.90 |
4.000 101.6 |
5.250 133.4 |
5.500 139.7 |
8 |
1.000 25.40 |
7.250
184.2 |
10.7 |
| 4 |
4.500 114.3 |
10.00 254.0 |
1.380 35.10 |
3.500 88.90 |
4.500 114.3 |
5.750 146.1 |
6.190 157.2 |
8 |
1.000
25.40 |
7.880
200.2 |
12.8 |
| 5 |
5.563 141.3 |
11.00 279.4 |
1.500 38.10 |
4.000 101.6 |
5.560 141.2 |
7.000 177.8 |
7.310 185.7 |
8 |
1.000 25.40 |
9.250
235.0 |
16.9 |
| 6 |
6.625 168.3 |
12.50 317.5 |
1.620 41.10 |
4.060 103.1 |
6.630 168.4 |
8.120 206.2 |
8.500 215.9 |
12 |
1.000 25.40 |
10.62
269.7 |
22.0 |
| 8 |
8.625 219.1 |
15.00
381 0 |
1.880 47.80 |
4.620 117.3 |
8.630 219.2 |
10.25 260.4 |
10.62 269.7 |
12 |
1.120 28.40 |
13.00
330.2 |
34.7 |
| 10 |
10.75 273.0 |
17.50 444.5 |
2.120 53.80 |
4.880 124.0 |
10.75 273.0 |
12.62 320.5 |
12.75 323.8 |
16 |
1.250 31.75 |
15.25
387.4 |
48.5 |
| 12 |
12.75 323.8 |
20.50 520.7 |
2.250 57.15 |
5.380 136.7 |
12.75 323.8 |
14.75 374.7 |
15.00 381.0 |
16 |
1.380 35.10 |
17.75
450.9 |
69.6 |
| 14 |
14.00 355.6 |
23.00 584.2 |
2.380 60.45 |
5.880 149.4 |
14.00 355.6 |
16.75 425.5 |
16.25 412.7 |
20 |
1.380 35.10 |
20.25
514.4 |
95.5 |
| 16 |
16.00 406.4 |
25.50 647.7 |
2.500 63.50 |
6.000 152.4 |
16.00 406.4 |
19.00 482.6 |
18.50 469.9 |
20 |
1.500
38 10 |
22.50
571.5 |
118 |
| 18 |
18.00 457.2 |
28.00 711.2 |
2.620 66.55 |
6.500 165.1 |
18.00 457.2 |
21.00 533.4 |
21.00 533.4 |
24 |
1.500 38.10 |
24.75
628.7 |
145 |
| 20 |
20.00 508.0 |
30.50 774.7 |
2.750 69.85 |
6.620 168.1 |
20.00 508.0 |
23.12 587.2 |
23.00 584.2 |
24 |
1.620 41.10 |
27.00
685.8 |
173 |
| 24 |
24.00 609.6 |
36.00 914.4 |
3.000 76.20 |
6.880 174.8 |
24.00 609.6 |
27.62 701.5 |
27.25 692.1 |
24 |
1.880
47.80 |
32.00
812.8 |
249 |
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Notes
- 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.
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