ANSI B16.47 SERIES A CLASS 900 FLANGES DIMENSIONS TABLE
Nom Size
OD
Thickness
OD of RF
Dia at Base
Bore
LTH
Dia Bevel
Drilling
Weight
Weld Neck
Blind
Bolt Circle
Bolt Length
Hole Dia
# of Holes
Weld Neck
Blind
O
C
C
R
X
B
Y
A
-1
-2
26
42.75
5.5
6.31
29.5
30.5
11.25
26
37.5
18.75
2.88
20
1525
2566
28
46
5.62
6.75
31.5
32.75
11.75
28
40.25
19.75
3.12
20
1810
3178
30
48.5
5.88
7.18
33.75
35
12.25
30
42.75
20.5
3.12
20
2120
3758
32
51.75
6.25
7.62
36
37.25
13
32
45.5
22
3.38
20
2545
4541
34
55
6.5
8.06
38
39.62
13.75
34
48.25
23
3.62
20
2970
5425
36
57.5
6.75
8.44
40.25
41.88
14.25
36
50.75
23.75
3.62
20
3395
6209
38
57.5
7.5
8.5
43.25
42.25
13.88
38
50.75
24.5
3.62
20
3385
6253
40
59.5
7.75
8.81
45.75
44.38
14.31
40
52.75
25
3.62
24
3620
6940
42
61.5
8.12
9.12
47.75
46.31
14.62
42
54.75
25.75
3.62
24
3960
7675
44
64.88
8.44
9.56
50
48.62
15.38
44
57.62
27
3.88
24
4300
8954
46
68.25
8.88
10.06
52.5
50.88
16.18
46
60.5
28.5
4.12
24
4640
10426
48
70.25
9.19
10.38
54.5
52.88
16.5
48
62.5
29
4.12
24
4980
11398
* Flange dimensions are in inches. Flange weights are in pounds. * (1)- Flange Bolt lenghts are calculated based on bolting one WN to one Blind.
* (2)- Flange Bolt diameter should be 1/8" less than the bolt hole diameter * Note:Larger sizes flange as well as intermediate sizes can be furnished.
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