ANSI/ASME B16.5 Flange Catalogue
Download
Class 75 Flange
Class 150 Flange
Class 300 Flange
Class 400 Flange
Class 600 Flange
Class 900 Flange
ANSI/ASME B16.47 Series B Class 75 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Length Thru Hub (Y)
Hub Diameter (X)
Minimum Fillet Radius (r)
Top of Hub (A)
Bore (B)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
30.00
1.31
27.75
2.31
26.62
0.31
26.06
Specified by purchaser
80
28.50
36
0.75
28
32.00
1.31
29.75
2.44
28.62
0.31
28.06
Specified by purchaser
85
30.50
40
0.75
30
34.00
1.31
31.75
2.56
30.62
0.31
30.06
Specified by purchaser
90
32.50
44
0.75
32
36.00
1.38
33.75
2.75
32.62
0.31
32.06
Specified by purchaser
105
34.50
48
0.75
34
38.00
1.38
35.75
2.88
34.62
0.31
34.06
Specified by purchaser
110
36.50
52
0.75
36
40.69
1.44
38.00
3.38
36.81
0.38
36.06
Specified by purchaser
145
39.06
40
0.88
38
42.69
1.50
40.00
3.50
38.81
0.38
38.06
Specified by purchaser
160
41.06
40
0.88
40
44.69
1.50
42.00
3.62
40.81
0.38
40.06
Specified by purchaser
170
43.06
44
0.88
42
46.69
1.56
44.00
3.75
42.81
0.38
42.06
Specified by purchaser
185
45.06
48
0.88
44
49.25
1.69
46.25
4.12
44.88
0.38
44.06
Specified by purchaser
230
47.38
36
1.00
46
51.25
1.75
48.25
4.25
46.88
0.38
46.06
Specified by purchaser
245
49.38
40
1.00
48
53.25
1.81
50.25
4.38
48.88
0.38
48.06
Specified by purchaser
270
51.38
44
1.00
50
55.25
1.88
52.25
4.56
50.94
0.38
50.06
Specified by purchaser
290
53.38
44
1.00
52
57.38
1.88
54.25
4.75
52.94
0.38
52.06
Specified by purchaser
310
55.50
48
1.00
54
59.38
1.94
56.25
4.94
55.00
0.38
54.06
Specified by purchaser
340
57.50
48
1.00
56
62.00
2.00
58.50
5.31
57.12
0.44
56.06
Specified by purchaser
400
59.88
40
1.12
58
64.00
2.06
60.50
5.44
59.12
0.44
58.06
Specified by purchaser
430
61.88
44
1.12
60
66.00
2.19
62.50
5.69
61.12
0.44
60.06
Specified by purchaser
475
63.88
44
1.12
ANSI/ASME B16.47 Series B Class 75 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
30.00
1.31
27.75
255
28.50
36
0.75
28
32.00
1.31
29.75
290
30.50
40
0.75
30
34.00
1.31
31.75
330
32.50
44
0.75
32
36.00
1.44
33.75
390
34.50
48
0.75
34
38.00
1.50
35.75
430
36.50
52
0.75
36
40.69
1.67
38.00
520
39.06
40
0.88
38
42.69
1.75
40.00
595
41.06
40
0.88
40
44.69
1.75
42.00
760
43.06
44
0.88
42
46.69
1.88
44.00
895
45.06
48
0.88
44
49.25
1.94
46.25
1065
47.38
36
1.00
46
51.25
2.00
48.25
1185
49.38
40
1.00
48
53.25
2.12
50.25
1315
51.38
44
1.00
50
55.25
2.18
52.25
1505
53.38
44
1.00
52
57.38
2.25
54.25
1665
55.50
48
1.00
54
59.38
2.38
56.25
1840
57.50
48
1.00
56
62.00
2.44
58.50
2111
59.88
40
1.12
58
64.00
2.50
60.50
2300
61.88
44
1.12
60
66.00
2.62
62.50
2500
63.88
44
1.12
ANSI/ASME B16.47 Series B Class 150 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Max Thickness (T)
Raised Face Diameter (R)
Length Thru Hub (Y)
Hub Diameter (X)
Minimum Fillet Radius (r)
Top of Hub (A)
Bore (B)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
30.94
1.62
28.00
3.50
26.94
0.38
26.06
Specified by purchaser
120
29.31
36
0.88
28
32.94
1.75
30.00
3.75
28.94
0.38
28.06
Specified by purchaser
140
31.31
40
0.88
30
34.94
1.75
32.00
3.94
31.00
0.38
30.06
Specified by purchaser
150
33.31
44
0.88
32
37.06
1.81
34.00
4.25
33.06
0.38
32.06
Specified by purchaser
170
35.44
48
0.88
34
39.56
1.94
36.25
4.34
35.12
0.38
34.06
Specified by purchaser
210
37.69
40
1.00
36
41.62
2.06
38.25
4.62
37.19
0.38
36.06
Specified by purchaser
240
39.75
44
1.00
38
44.25
2.12
40.25
4.88
39.25
0.38
38.12
Specified by purchaser
290
42.12
40
1.12
40
46.25
2.19
42.50
5.06
41.31
0.38
40.12
Specified by purchaser
310
44.12
44
1.12
42
48.25
2.31
44.50
5.25
43.38
0.44
42.12
Specified by purchaser
345
46.12
48
1.12
44
50.25
2.38
46.50
5.38
45.38
0.44
44.12
Specified by purchaser
370
48.12
52
1.25
46
52.81
2.44
48.62
5.69
47.44
0.44
46.12
Specified by purchaser
435
50.56
40
1.25
48
54.81
2.56
50.75
5.88
49.50
0.44
48.12
Specified by purchaser
480
52.56
44
1.25
50
56.81
2.69
52.75
6.06
51.50
0.44
50.12
Specified by purchaser
520
54.56
48
1.25
52
58.81
2.75
54.75
6.19
53.56
0.44
52.12
Specified by purchaser
550
56.56
52
1.25
54
61.00
2.81
56.75
6.38
55.62
0.44
54.12
Specified by purchaser
620
58.75
56
1.25
56
63.00
2.88
58.75
6.56
57.69
0.56
56.12
Specified by purchaser
650
60.75
60
1.25
58
65.94
2.94
60.75
6.88
59.69
0.56
58.12
Specified by purchaser
780
63.44
48
1.38
60
67.94
3.00
63.00
7.06
61.81
0.56
60.12
Specified by purchaser
850
65.44
52
1.38
ANSI/ASME B16.47 Series B Class 150 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Max Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
30.94
1.75
28.00
375
29.31
36
0.88
28
32.94
1.88
30.00
455
31.31
40
0.88
30
34.94
2.00
32.00
545
33.31
44
0.88
32
37.06
2.12
34.00
648
35.44
48
0.88
34
39.56
2.25
36.25
782
37.69
40
1.00
36
41.62
2.31
38.25
890
39.75
44
1.00
38
44.25
2.50
40.25
1090
42.12
40
1.12
40
46.25
2.62
42.50
1247
44.12
44
1.12
42
48.25
2.69
44.50
1393
46.12
48
1.12
44
50.25
2.81
46.50
1579
48.12
52
1.25
46
52.81
2.94
48.62
1825
50.56
40
1.25
48
54.81
3.06
50.75
2045
52.56
44
1.25
50
56.81
3.18
52.75
2284
54.56
48
1.25
52
58.81
3.31
54.75
2547
56.56
52
1.25
54
61.00
3.44
56.75
2848
58.75
56
1.25
56
63.00
3.56
58.75
3145
60.75
60
1.25
58
65.94
3.68
60.75
3560
63.44
48
1.38
60
67.94
3.81
63.00
3913
65.44
52
1.38
ANSI/ASME B16.47 Series B Class 300 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Length Thru Hub (Y)
Hub Diameter (X)
Minimum Fillet Radius (r)
Top of Hub (A)
Bore (B)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
34.12
3.50
29.00
5.69
27.62
0.56
26.19
Specified by purchaser
400
31.62
32
1.38
28
36.25
3.50
31.00
5.88
29.75
0.56
28.19
Specified by purchaser
450
33.75
36
1.38
30
39.00
3.69
33.25
6.22
32.00
0.56
30.25
Specified by purchaser
550
36.25
36
1.50
32
41.50
4.06
33.50
6.62
34.00
0.62
32.25
Specified by purchaser
685
38.50
32
1.62
34
43.62
4.06
37.50
6.81
36.12
0.62
34.25
Specified by purchaser
750
40.62
36
1.62
36
46.12
4.06
39.75
7.12
38.00
0.62
36.25
Specified by purchaser
840
42.88
32
1.75
38
48.12
4.38
41.75
7.56
40.00
0.62
38.25
Specified by purchaser
915
44.88
36
1.75
40
50.12
4.56
43.88
7.81
42.00
0.62
40.25
Specified by purchaser
990
46.88
40
1.75
42
52.50
4.69
46.00
8.06
44.00
0.62
42.31
Specified by purchaser
1135
49.00
36
1.88
44
54.50
5.00
48.00
8.44
46.19
0.62
44.31
Specified by purchaser
1235
51.00
40
1.88
46
57.50
5.06
50.00
8.75
48.38
0.62
46.31
Specified by purchaser
1470
53.75
36
2.00
48
59.50
5.06
52.25
8.81
50.31
0.62
48.31
Specified by purchaser
1575
55.75
40
2.00
50
61.50
5.44
54.25
9.25
52.38
0.62
50.31
Specified by purchaser
1710
57.75
44
2.00
52
63.50
5.62
56.25
9.56
54.44
0.62
52.31
Specified by purchaser
1840
59.75
48
2.00
54
65.88
5.38
58.25
9.44
56.50
0.62
54.31
Specified by purchaser
1980
62.12
48
2.00
56
69.50
6.06
60.50
10.56
58.81
0.69
56.31
Specified by purchaser
2595
65.00
36
2.38
58
71.94
6.06
62.75
10.81
60.94
0.69
58.31
Specified by purchaser
2770
67.44
40
2.38
60
73.94
5.94
65.00
10.69
62.94
0.69
60.31
Specified by purchaser
2870
69.44
40
2.38
ANSI/ASME B16.47 Series B Class 300 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
34.12
3.50
29.00
905
31.62
32
1.38
28
36.25
3.50
31.00
1023
33.75
36
1.38
30
39.00
3.69
33.25
1250
36.25
36
1.50
32
41.50
4.06
33.50
1556
38.50
32
1.62
34
43.62
4.06
37.50
1719
40.62
36
1.62
36
46.12
4.06
39.75
1920
42.88
32
1.75
38
48.12
4.38
41.75
2257
44.88
36
1.75
40
50.12
4.56
43.88
2550
46.88
40
1.75
42
52.50
4.69
46.00
2875
49.00
36
1.88
44
54.50
5.00
48.00
3305
51.00
40
1.88
46
57.50
5.12
50.00
3766
53.75
36
2.00
48
59.50
5.31
52.25
4183
55.75
40
2.00
50
61.50
5.50
54.25
4629
57.75
44
2.00
52
63.50
5.68
56.25
5096
59.75
48
2.00
54
65.88
5.88
58.25
5679
62.12
48
2.00
56
69.50
6.18
60.50
6642
65.00
36
2.38
58
71.94
6.38
62.75
7347
67.44
40
2.38
60
73.94
6.56
65.00
7980
69.44
40
2.38
ANSI/ASME B16.47 Series B Class 400 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
38.25
3.88
29.50
1263
34.50
28
1.88
28
40.75
4.12
31.50
1520
37.00
28
2.00
30
43.00
4.38
33.75
1802
39.25
28
2.12
32
45.25
4.56
36.00
2075
41.50
28
2.12
34
47.50
4.81
38.00
2415
43.50
28
2.12
36
50.00
5.06
40.25
2815
46.00
32
2.12
38
47.50
4.88
40.75
2450
44.00
32
1.88
40
50.00
5.12
43.00
2849
46.25
32
2.00
42
52.00
5.25
45.00
3160
48.25
32
2.00
44
54.50
5.50
47.25
3635
50.50
32
2.12
46
56.75
5.75
49.50
4120
52.75
36
2.12
48
59.50
6.00
51.50
4725
55.25
28
2.38
50
61.75
6.25
53.62
5303
57.50
32
2.38
52
63.75
6.44
55.62
5823
59.50
32
2.38
54
67.00
6.75
57.88
6742
62.25
28
2.62
56
69.00
6.94
60.12
7352
64.25
32
2.62
58
71.00
7.12
62.12
7986
66.25
32
2.62
60
74.25
7.44
64.38
9126
69.00
32
2.88
ANSI/ASME B16.47 Series B Class 400 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
33.50
3.50
28.00
875
30.75
28
1.50
28
36.00
3.75
30.00
1081
33.00
24
1.62
30
38.25
4.00
32.25
1302
35.25
28
1.62
32
40.75
4.25
34.38
1570
37.50
28
1.75
34
42.75
4.38
36.50
1780
39.50
32
1.75
36
45.50
4.69
38.62
2160
42.00
28
1.88
ANSI/ASME B16.47 Series B Class 600 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Length Thru Hub (Y)
Hub Diameter (X)
Minimum Fillet Radius (r)
Top of Hub (A)
Bore (B)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
35.00
4.38
28.62
7.12
27.50
0.50
26.00
Specified by purchaser
550
31.75
28
1.75
28
37.50
4.56
30.88
7.50
29.62
0.50
28.00
Specified by purchaser
650
34.00
28
1.88
30
40.25
4.94
33.12
8.06
31.75
0.50
30.00
Specified by purchaser
810
36.50
28
2.00
32
42.75
5.12
35.25
8.50
33.88
0.50
32.00
Specified by purchaser
950
38.75
28
2.12
34
45.75
5.56
37.50
9.19
36.00
0.56
34.00
Specified by purchaser
1205
41.50
24
2.38
36
47.75
5.75
39.75
9.56
38.12
0.56
36.00
Specified by purchaser
1340
43.50
28
2.38
ANSI/ASME B16.47 Series B Class 600 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
35.00
4.38
28.62
1195
31.75
28
1.75
28
37.50
4.56
30.88
1427
34.00
28
1.88
30
40.25
5.00
33.12
1800
36.50
28
2.00
32
42.75
5.31
35.25
2160
38.75
28
2.12
34
45.75
5.68
37.50
2645
41.50
24
2.38
36
47.75
5.94
39.75
3013
43.50
28
2.38
ANSI/ASME B16.47 Series B Class 900 Weld Neck Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Length Thru Hub (Y)
Hub Diameter (X)
Minimum Fillet Radius (r)
Top of Hub (A)
Bore (B)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
40.25
5.31
30.00
10.19
29.25
0.44
26.00
Specified by purchaser
1050
35.50
20
2.62
28
43.50
5.81
32.25
10.88
31.38
0.50
28.00
Specified by purchaser
1520
38.25
20
2.88
30
46.50
6.12
34.50
11.38
33.50
0.50
30.00
Specified by purchaser
1820
40.75
20
3.12
32
48.75
6.31
36.50
11.94
35.75
0.50
32.00
Specified by purchaser
2065
43.00
20
3.12
34
51.75
6.75
39.00
12.56
37.88
0.56
34.00
Specified by purchaser
2450
45.50
20
3.38
36
53.00
6.81
40.50
12.81
40.00
0.56
36.00
Specified by purchaser
2520
47.25
24
3.12
ANSI/ASME B16.47 Series B Class 900 Blind Flange Dimensions
Nominal Pipe Size
Outside Diameter (O)
Min Thickness (T)
Raised Face Diameter (R)
Approximate Weight (lbs)
Bolt Circle (C)
Number of Holes
Diameter of Holes
26
40.25
6.06
30.00
2185
35.50
20
2.62
28
43.50
6.56
32.25
2762
38.25
20
2.88
30
46.50
6.93
34.50
3334
40.75
20
3.12
32
48.75
7.31
36.50
3865
43.00
20
3.12
34
51.75
7.68
39.00
4575
45.50
20
3.38
36
53.00
7.94
40.50
4963
47.25
24
3.12