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DIMENSIONS OF CLASS 150
FLANGES AS PER ANSI B 16.5

|
NOMINAL
PIPE
SIZE |
FLANGE
DIA |
Dia of
bolt
circle |
Dia of
bolt holes |
No of
Holes |
Thk of
Flange |
Dia
of
Hub |
Length through Hub |
Dia of
Bore |
Dia
of
R/F |
Depth of
socket |
|
|
|
|
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
|
O |
A |
D |
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
88.9 |
60.3 |
15.9 |
4 |
11.1 |
30.2 |
15.09 |
47.6 |
15.9 |
22.3 |
22.9 |
34.9 |
9.5 |
20 |
98.4 |
69.8 |
15.9 |
4 |
12.7 |
38.1 |
15.9 |
52.4 |
15.9 |
27.7 |
28.2 |
42.9 |
11.1 |
25 |
107.9 |
79.4 |
15.9 |
4 |
14.3 |
49.2 |
17.5 |
55.6 |
17.5 |
34.5 |
35.0 |
50.8 |
12.7 |
32 |
117.5 |
88.9 |
15.9 |
4 |
15.9 |
58.7 |
20.6 |
57.1 |
20.6 |
43.2 |
43.7 |
63.5 |
14.3 |
40 |
127.0 |
98.4 |
15.9 |
4 |
17.5 |
65.1 |
22.2 |
61.9 |
22.2 |
49.5 |
50.0 |
73.0 |
15.9 |
50 |
152.4 |
120.6 |
19.0 |
4 |
19.0 |
77.8 |
25.4 |
63.5 |
25.4 |
62.0 |
62.5 |
92.1 |
17.5 |
65 |
177.8 |
139.7 |
19.0 |
4 |
22.2 |
90.5 |
28.6 |
69.8 |
28.6 |
74.7 |
75.4 |
104.8 |
19.0 |
80 |
190.5 |
152.4 |
19.0 |
4 |
23.8 |
107.9 |
30.2 |
69.8 |
30.2 |
90.7 |
91.4 |
127.0 |
20.6 |
100 |
228.6 |
190.5 |
19.0 |
8 |
23.8 |
134.9 |
33.3 |
76.2 |
33.3 |
116.1 |
116.8 |
157.2 |
23.8 |
125 |
254.0 |
215.9 |
22.2 |
8 |
23.8 |
163.5 |
36.5 |
88.9 |
36.5 |
143.8 |
144.5 |
185.7 |
23.8 |
150 |
279.4 |
241.3 |
22.2 |
8 |
25.4 |
192.1 |
39.7 |
88.9 |
39.7 |
170.7 |
171.4 |
215.9 |
27.0 |
200 |
342.9 |
298.4 |
22.2 |
8 |
28.6 |
246.1 |
44.4 |
101.6 |
44.4 |
221.5 |
222.2 |
269.9 |
31.7 |
250 |
406.4 |
361.9 |
25.4 |
12 |
30.2 |
304.8 |
49.2 |
101.6 |
49.2 |
276.3 |
277.4 |
323.8 |
33.3 |
300 |
482.6 |
431.8 |
25.4 |
12 |
31.8 |
365.1 |
55.6 |
114.3 |
55.6 |
327.1 |
328.2 |
381.0 |
39.7 |
350 |
533.4 |
476.2 |
28.6 |
12 |
34.9 |
400.0 |
57.1 |
127.0 |
79.4 |
359.1 |
360.2 |
412.7 |
41.3 |
400 |
596.9 |
539.7 |
28.6 |
16 |
36.5 |
457.2 |
63.5 |
127.0 |
87.3 |
410.5 |
411.2 |
469.9 |
44.4 |
450 |
635.0 |
577.8 |
31.7 |
16 |
39.7 |
504.8 |
68.3 |
139.7 |
96.8 |
461.8 |
462.3 |
533.4 |
49.2 |
500 |
698.5 |
635.0 |
31.7 |
20 |
42.9 |
558.8 |
73.0 |
144.5 |
103.2 |
513.1 |
514.3 |
584.2 |
54.0 |
600 |
812.8 |
749.3 |
34.9 |
20 |
47.6 |
663.6 |
82.5 |
152.4 |
111.1 |
615.9 |
615.9 |
692.1 |
63.5 |
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NOM INAL PIPE SIZE |
FLANGE DIA |
Dia of bolt circle |
|
No of Holes |
Thk of Flange |
Dia of Hub |
Length through Hub |
Dia of Bore |
Dia of R/F |
Depth of socket |
|
|
|
|
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
|
|
O |
A |
|
|
|
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
95.2 |
66.7 |
15.9 |
4 |
14.3 |
38.1 |
22.2 |
52.4 |
22.2 |
22.3 |
22.9 |
34.9 |
9.5 |
20 |
117.5 |
82.5 |
19.0 |
4 |
15.9 |
47.6 |
25.4 |
57.1 |
25.4 |
27.7 |
28.2 |
42.9 |
11.1 |
25 |
123.8 |
88.9 |
19.0 |
4 |
17.5 |
54.0 |
27.0 |
61.9 |
27.0 |
34.5 |
35.0 |
50.8 |
12.7 |
32 |
133.3 |
98.4 |
19.0 |
4 |
19.0 |
63.5 |
27.0 |
65.1 |
27.0 |
43.2 |
43.7 |
63.5 |
14.3 |
40 |
155.6 |
114.3 |
22.2 |
4 |
20.6 |
69.8 |
30.2 |
68.3 |
30.2 |
49.5 |
50.0 |
73.0 |
15.9 |
50 |
165.1 |
127.0 |
19.0 |
8 |
22.2 |
84.1 |
33.3 |
69.8 |
33.3 |
62.0 |
62.5 |
92.1 |
17.5 |
65 |
190.5 |
149.2 |
22.2 |
8 |
25.4 |
100.0 |
38.1 |
76.2 |
38.1 |
74.7 |
75.4 |
104.8 |
19.0 |
80 |
209.5 |
168.3 |
22.2 |
8 |
28.6 |
117.5 |
42.9 |
79.4 |
42.9 |
90.7 |
91.4 |
127.0 |
20.6 |
100 |
254.0 |
200.0 |
22.2 |
8 |
31.8 |
146.0 |
47.6 |
85.7 |
47.6 |
116.1 |
116.8 |
157.2 |
23.8 |
125 |
279.4 |
234.9 |
22.2 |
8 |
34.9 |
177.8 |
50.8 |
98.4 |
50.8 |
143.8 |
144.5 |
185.7 |
__ |
150 |
317.5 |
269.9 |
22.2 |
12 |
36.5 |
206.4 |
52.4 |
98.4 |
52.4 |
170.7 |
171.4 |
215.9 |
__ |
200 |
381.0 |
330.2 |
25.4 |
12 |
41.3 |
260.3 |
61.9 |
111.1 |
61.9 |
221.5 |
222.2 |
269.9 |
__ |
250 |
444.5 |
387.3 |
28.6 |
16 |
47.6 |
320.7 |
66.7 |
117.5 |
95.2 |
276.3 |
277.4 |
323.8 |
__ |
300 |
520.7 |
450.8 |
31.7 |
16 |
50.8 |
374.6 |
73.0 |
130.2 |
101.6 |
327.1 |
328.2 |
381.0 |
__ |
350 |
584.2 |
514.3 |
31.7 |
20 |
54.0 |
425.4 |
76.2 |
142.9 |
111.1 |
359.1 |
360.2 |
412.7 |
__ |
400 |
647.7 |
571.5 |
34.9 |
20 |
57.2 |
482.6 |
82.5 |
146.0 |
120.6 |
410.5 |
411.2 |
469.9 |
__ |
450 |
711.2 |
628.5 |
34.9 |
24 |
60.3 |
533.4 |
88.9 |
158.7 |
130.2 |
461.8 |
462.3 |
533.4 |
__ |
500 |
774.7 |
685.8 |
34.9 |
24 |
63.5 |
587.4 |
95.2 |
161.9 |
139.7 |
513.1 |
514.3 |
584.2 |
__ |
600 |
914.4 |
812.8 |
41.3 |
24 |
69.8 |
701.7 |
106.4 |
168.3 |
152.4 |
615.9 |
615.9 |
692.1 |
|
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NOM INAL PIPE SIZE |
FLANGE DIA |
Dia of bolt circle |
Dia of bolt holes |
Noof Holes |
Thk of Flange |
Dia of Hub |
Length through Hub |
Dia of Bore |
Dia of R/F |
Depth of socket |
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
|
|
O |
A |
D |
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
95.2 |
66.7 |
15.9 |
4 |
14.3 |
38.1 |
22.2 |
52.4 |
22.3 |
22.3 |
22.8 |
34.9 |
9.5 |
20 |
117.5 |
82.5 |
19.0 |
4 |
15.9 |
47.6 |
25.4 |
57.1 |
25.4 |
27.7 |
28.1 |
42.9 |
11.1 |
25 |
123.8 |
88.9 |
19.0 |
4 |
17.5 |
54.0 |
27.0 |
61.9 |
26.9 |
34.5 |
35.0 |
50.8 |
12.7 |
32 |
133.3 |
98.4 |
19.0 |
4 |
20.6 |
63.5 |
28.6 |
66.7 |
28.4 |
43.2 |
43.6 |
63.5 |
14.2 |
40 |
155.6 |
114.3 |
22.2 |
4 |
22.2 |
69.8 |
31.7 |
69.8 |
31.7 |
49.5 |
50.0 |
73.0 |
15.8 |
50 |
165.1 |
127.0 |
19.0 |
8 |
25.4 |
84.1 |
36.5 |
73.0 |
36.5 |
62.0 |
62.4 |
92.1 |
17.4 |
65 |
190.5 |
149.2 |
22.2 |
8 |
28.6 |
100.0 |
41.3 |
79.4 |
41.1 |
74.7 |
75.4 |
104.8 |
19.0 |
80 |
209.5 |
168.3 |
22.2 |
8 |
31.8 |
117.5 |
46.0 |
82.5 |
45.9 |
90.7 |
91.4 |
127.0 |
__ |
100 |
273.0 |
215.9 |
25.4 |
8 |
38.1 |
152.4 |
54.0 |
101.6 |
53.8 |
116.1 |
116.8 |
157.2 |
__ |
125 |
330.2 |
266.7 |
28.6 |
8 |
44.4 |
188.9 |
60.3 |
114.3 |
60.4 |
143.8 |
141.5 |
185.7 |
__ |
150 |
355.6 |
292.1 |
28.6 |
12 |
47.6 |
222.2 |
66.7 |
117.5 |
66.5 |
170.7 |
171.4 |
215.9 |
__ |
200 |
419.1 |
349.2 |
31.7 |
12 |
55.6 |
273.0 |
76.2 |
133.3 |
76.2 |
221.5 |
222.2 |
269.9 |
__ |
250 |
508.0 |
431.8 |
34.9 |
16 |
63.5 |
342.9 |
85.7 |
152.4 |
111.2 |
26.3 |
277.3 |
323.8 |
__ |
300 |
558.8 |
488.9 |
34.9 |
20 |
66.7 |
400.0 |
92.1 |
155.6 |
117.3 |
327.1 |
328.1 |
381.0 |
__ |
350 |
603.2 |
527.0 |
38.1 |
20 |
69.9 |
431.8 |
93.7 |
165.1 |
127.0 |
359.1 |
360.1 |
412.7 |
__ |
400 |
685.8 |
603.2 |
41.3 |
20 |
76.2 |
495.3 |
106.4 |
177.8 |
139.7 |
410.5 |
411.2 |
469.9 |
__ |
450 |
742.9 |
654.0 |
44.4 |
20 |
82.6 |
546.1 |
117.5 |
184.1 |
152.4 |
461.8 |
462.2 |
533.4 |
__ |
500 |
812.8 |
723.9 |
44.4 |
24 |
88.9 |
609.6 |
127.0 |
190.5 |
165.1 |
513.1 |
514.3 |
584.2 |
__ |
600 |
939.8 |
838.2 |
50.8 |
24 |
101.6 |
717.5 |
139.7 |
203.2 |
184.1 |
615.9 |
615.9 |
692.1 |
__ |
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NOM INAL PIPE SIZE |
FLANGE DIA |
Dia of bolt circle |
Dia of bolt holes |
No of Holes |
Thk of Flange |
Dia of Hub |
Length through Hub |
Dia of Bore |
Dia of R/F |
Depth of socket |
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
O |
A |
D |
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
120.6 |
82.5 |
22.2 |
4 |
22.2 |
38.1 |
31.7 |
60.3 |
31.7 |
22.3 |
22.8 |
34.9 |
9.5 |
20 |
130.2 |
88.9 |
22.2 |
4 |
25.4 |
44.4 |
34.9 |
69.8 |
35.0 |
27.7 |
28.1 |
42.9 |
11.1 |
25 |
149.2 |
101.6 |
25.4 |
4 |
28.6 |
52.4 |
41.3 |
73.0 |
41.1 |
34.5 |
35.0 |
50.8 |
12.7 |
32 |
158.7 |
111.1 |
25.4 |
4 |
28.6 |
63.5 |
41.3 |
73.0 |
41.1 |
43.2 |
43.6 |
63.5 |
14.2 |
40 |
177.8 |
123.8 |
28.6 |
4 |
31.8 |
49.8 |
44.4 |
82.5 |
44.4 |
49.5 |
50.0 |
73.0 |
15.8 |
50 |
215.9 |
165.1 |
25.4 |
8 |
38.1 |
104.8 |
57.1 |
101.6 |
57.1 |
62.0 |
62.4 |
92.1 |
17.4 |
65 |
244.5 |
190.5 |
28.6 |
8 |
41.3 |
123.8 |
63.5 |
104.8 |
63.5 |
74.7 |
75.4 |
104.8 |
19.0 |
80 |
267.0 |
190.5 |
25.4 |
8 |
38.1 |
127.0 |
53.9 |
101.6 |
53.8 |
90.7 |
91.4 |
127.0 |
- |
100 |
292.1 |
234.9 |
31.7 |
8 |
44.4 |
158.7 |
69.8 |
114.3 |
69.8 |
116.0 |
116.8 |
157.1 |
- |
125 |
349.2 |
279.4 |
35.0 |
8 |
50.8 |
190.5 |
79.3 |
127.0 |
79.2 |
143.7 |
114.5 |
185.7 |
- |
150 |
381.0 |
317.5 |
31.7 |
12 |
55.6 |
234.9 |
85.8 |
139.7 |
85.8 |
170.6 |
171.4 |
215.9 |
- |
200 |
469.9 |
393.7 |
38.1 |
12 |
63.5 |
298.4 |
101.6 |
162.0 |
114.3 |
221.4 |
222.2 |
269.8 |
- |
250 |
546.1 |
469.9 |
38.1 |
16 |
69.8 |
368.3 |
107.9 |
184.1 |
127.0 |
276.3 |
277.3 |
323.8 |
- |
300 |
609.6 |
533.4 |
38.1 |
20 |
79.3 |
419.1 |
117.4 |
200.0 |
142.7 |
327.1 |
328.1 |
381.0 |
- |
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NOMI NAL PIPE SIZE |
FLANGE DIA |
Dia of bolt circle |
Dia of bolt holes |
No of Holes |
Thk of Flange |
Dia of Hub |
Length through Hub |
Dia of Bore |
Dia of R/F |
Depth of socket |
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
O |
A |
D |
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
120.6 |
82.5 |
22.2 |
4 |
22.2 |
38.1 |
31.7 |
60.3 |
31.7 |
22.3 |
22.8 |
34.9 |
9.5 |
20 |
130.2 |
88.9 |
22.2 |
4 |
25.4 |
44.4 |
34.9 |
69.8 |
34.9 |
27.7 |
28.1 |
42.9 |
11.1 |
25 |
149.2 |
101.6 |
25.4 |
4 |
28.6 |
52.4 |
41.3 |
73.0 |
41.3 |
34.5 |
35.0 |
50.8 |
12.7 |
32 |
158.7 |
111.1 |
25.4 |
4 |
28.6 |
63.5 |
41.3 |
73.0 |
41.3 |
43.2 |
43.6 |
63.5 |
14.2 |
40 |
177.8 |
123.8 |
28.6 |
4 |
31.8 |
69.8 |
44.4 |
82.5 |
44.4 |
49.5 |
50.0 |
73.0 |
15.8 |
50 |
215.9 |
165.1 |
25.4 |
8 |
38.1 |
104.8 |
57.1 |
101.6 |
57.1 |
62.0 |
62.0 |
92.1 |
17.4 |
65 |
244.5 |
190.5 |
28.6 |
8 |
41.3 |
123.8 |
63.5 |
104.8 |
63.5 |
74.7 |
75.4 |
104.8 |
19.0 |
80 |
266.7 |
203.2 |
31.7 |
8 |
47.6 |
133.3 |
73.0 |
117.5 |
73.0 |
90.7 |
91.4 |
127.0 |
__ |
100 |
311.1 |
241.3 |
34.9 |
8 |
54.0 |
161.9 |
90.5 |
123.0 |
90.4 |
116.1 |
116.8 |
157.2 |
__ |
125 |
374.6 |
292.1 |
41.3 |
8 |
73.0 |
196.8 |
104.8 |
155.6 |
104.8 |
143.8 |
144.5 |
185.7 |
__ |
150 |
393.7 |
317.5 |
38.1 |
12 |
82.6 |
228.6 |
119.1 |
171.4 |
119.1 |
170.7 |
171.4 |
215.9 |
__ |
200 |
482.6 |
393.7 |
44.4 |
12 |
92.1 |
292.1 |
142.9 |
212.7 |
142.8 |
221.5 |
222.2 |
269.9 |
__ |
250 |
584.2 |
482.6 |
50.8 |
12 |
107.9 |
368.3 |
158.7 |
254.0 |
177.8 |
276.3 |
277.3 |
323.8 |
__ |
300 |
673.1 |
571.5 |
54.0 |
16 |
123.8 |
450.8 |
181.0 |
282.5 |
218.9 |
327.1 |
328.1 |
381.0 |
__ |
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NOM INAL PIPE SIZE |
FLANGE DIA |
Dia of bolt circle |
Dia of bolt holes |
No of Holes |
Thk of Flange |
Dia of Hub |
Length through Hub |
Dia of Bore |
Dia of R/F |
Depth of socket |
S/O&S/W |
W/N |
L/J |
S/O&S/W |
L/J |
O |
A |
D |
C |
E |
Y |
Y |
Y |
B |
B |
R |
F |
15 |
133.3 |
88.9 |
22.2 |
4 |
30.2 |
42.9 |
39.7 |
73.0 |
39.7 |
22.3 |
22.3 |
34.9 |
__ |
20 |
139.7 |
95.2 |
22.2 |
4 |
31.7 |
50.8 |
42.9 |
79.4 |
42.9 |
27.7 |
27.7 |
42.9 |
__ |
25 |
158.7 |
107.9 |
25.4 |
4 |
34.9 |
57.1 |
47.7 |
88.9 |
47.7 |
34.5 |
34.5 |
50.8 |
__ |
32 |
184.1 |
130.2 |
28.6 |
4 |
38.1 |
73.0 |
52.4 |
95.2 |
52.4 |
43.2 |
43.2 |
63.5 |
__ |
40 |
203.2 |
146.0 |
31.7 |
4 |
44.4 |
79.4 |
60.3 |
111.1 |
60.3 |
49.5 |
49.5 |
73.0 |
__ |
50 |
234.9 |
171.4 |
28.6 |
8 |
50.8 |
95.2 |
69.8 |
127.0 |
69.8 |
62.4 |
62.0 |
92.1 |
__ |
65 |
266.7 |
196.8 |
31.7 |
8 |
57.1 |
114.3 |
79.4 |
142.9 |
79.4 |
74.7 |
74.7 |
104.8 |
__ |
80 |
304.8 |
228.6 |
34.9 |
8 |
66.7 |
133.3 |
92.1 |
168.3 |
92.1 |
90.7 |
90.7 |
127.0 |
__ |
100 |
355.6 |
273.0 |
41.3 |
8 |
76.2 |
165.1 |
107.9 |
190.5 |
107.9 |
116.1 |
116.1 |
157.2 |
__ |
125 |
419.1 |
323.8 |
47.6 |
8 |
92.1 |
203.2 |
130.0 |
228.6 |
130.0 |
143.8 |
143.8 |
185.7 |
__ |
150 |
482.6 |
368.3 |
54.0 |
8 |
107.9 |
234.9 |
152.4 |
273.0 |
152.4 |
170.7 |
170.7 |
215.9 |
__ |
200 |
552.4 |
438.1 |
54.0 |
12 |
127.0 |
304.8 |
177.8 |
317.5 |
177.8 |
221.5 |
221.5 |
269.9 |
__ |
250 |
673.1 |
539.7 |
66.7 |
12 |
165.1 |
374.6 |
228.6 |
419.1 |
228.6 |
276.3 |
276.3 |
323.8 |
__ |
300 |
762.0 |
619.1 |
73.0 |
12 |
184.1 |
441.3 |
354.0 |
463.5 |
254.0 |
327.1 |
327.1 |
381.0 |
__ |
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BRITISH STANDARD PIPE FLANGES
DIMENSION OF PIPE FLANGES AS PER TABLE
BS
10 Table D For Steam Working Pressure up to 50 lbs per Sq.inch. |
BS Table E for Steam Working Pressure above 50 lbs and upto 100 lbs per sq.inch |
Nominal pipe size |
OD of pipe |
Dia of flange |
Dia of Bolt Circle |
No of Bolt |
Dia of Bolt |
Thick
ness |
Nominal pipe size |
Dia of Flange |
Dia of Bolt Cirle |
No of Bolt |
Dia of Bolt |
Thick
ness |
1/2" |
27/32" |
3.3/4" |
2.5/8" |
4 |
1/2" |
3/16" |
1/2" |
3.3/4" |
2.5/8" |
4 |
1/2" |
1/4" |
3/4" |
1.1/16" |
4" |
2.7/8" |
4 |
1/2" |
3/16" |
1" |
4" |
2.7/8" |
4 |
1/2" |
1/4" |
1" |
1.11/32" |
4.1/2" |
3.1/4" |
4 |
1/2" |
3/16" |
1" |
4.1/2" |
3.1/4" |
4 |
1/2" |
9/32" |
1.1/4" |
1.11/16" |
4.3/4" |
3.7/16" |
4 |
1/2" |
1/4" |
1.1/4" |
4.3/4" |
3.7/16" |
4 |
1/2" |
5/16" |
1.1/2" |
1.29/32" |
5.1/4" |
3.7/8" |
4 |
1/2" |
1/4" |
1.1/2" |
5.1/4" |
3.7/8" |
4 |
1/2" |
11/32" |
2" |
2.3/8" |
6" |
4.1/2" |
4 |
5/8" |
5/16" |
2" |
6" |
4.1/2" |
4 |
5/8" |
3/8" |
2 1/2" |
3" |
6.1/2" |
5" |
4 |
5/8" |
5/16" |
2.1/2" |
6.1/2" |
5" |
4 |
5/8" |
13/32" |
3" |
3.1/2" |
7.1/4" |
5 3/4" |
4 |
5/8" |
3/8" |
3" |
7.1/4" |
5.3/4" |
4 |
5/8" |
7/16" |
3 1/2" |
4" |
8" |
6.1/2" |
4 |
5/8" |
3/8" |
3.1/2" |
8" |
6.1/2" |
8 |
5/8" |
15/32" |
4" |
4.1/2" |
8.1/2" |
7" |
4 |
5/8" |
3/8" |
4" |
8.1/2" |
7" |
8 |
5/8" |
1/2" |
5" |
5.1/2" |
10" |
8.1/4" |
8 |
5/8" |
1/2" |
5" |
10" |
8.1/4" |
8 |
5/8" |
9/16" |
6" |
6.1/2" |
11" |
9.1/4" |
8 |
5/8" |
1/2" |
6" |
11" |
9.1/4" |
8 |
3/4" |
11/16" |
7" |
7.1/2" |
12" |
10.1/4" |
8 |
5/8" |
1/2" |
7" |
12" |
10.1/4" |
8 |
3/4" |
3/4" |
8" |
8.5/8" |
13.1/4" |
11.1/2" |
8 |
5/8" |
1/2" |
8" |
13.1/4" |
11.1/2" |
8 |
3/4" |
3/4" |
9" |
9.5/8" |
14.1/2" |
12.3/4" |
8 |
5/8" |
5/8" |
9" |
14.1/2" |
12.3/4" |
12 |
3/4" |
3/16" |
10" |
10.3/4" |
16" |
14" |
8 |
3/4" |
5/8" |
10" |
16" |
14" |
12 |
3/4" |
7/8" |
12" |
12.3/4" |
18" |
16" |
12 |
3/4" |
5/8" |
12" |
18" |
16" |
12 |
7/8" |
1" |
14" |
14" |
20.3/4" |
18.1/2" |
12 |
7/8" |
3/4" |
14" |
20.3/4" |
18.1/2" |
12 |
7/8" |
1" |
16" |
16" |
22.3/4" |
20.1/2" |
12 |
7/8" |
3/4" |
16" |
22.3/4" |
20.1/2" |
12 |
7/8" |
1" |
18" |
18" |
25.1/4" |
23" |
12 |
7/8" |
7/8" |
18" |
25.1/4" |
23" |
16 |
7/8" |
1.1/8" |
2 |
20" |
27.3/4" |
25.1/4" |
16 |
7/8" |
1" |
20" |
27.3/4" |
25.1/4" |
16 |
7/8" |
1 1/4" |
21" |
21" |
25" |
26.1/2" |
16 |
7/8" |
1" |
|
|
|
|
|
|
24" |
24" |
32.1/2" |
29.3/4" |
16 |
1" |
1.1/8" |
24" |
32.1/2" |
29.3/4" |
16 |
1" |
1.1/2" |
For 1/2" and 5/8" Bolts the diameters of the holes 1/16" Larger
than the bolts for 3/4 bolts and sizes above, the diameter shall be 1/8" Larger
than the Bolts. |
For 1/2" and 5/8" Bolts the diameters of holes 1/16" Larger than
the bolts for 3/4 bolts and sizes above, the diameter shall be 1/8" Larger than
the Bolts. |
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BRITISH STANDARD PIPE FLANGES
BS Table F For Working Pressure above 100 lbs
and upto 150 lbs per sq. inch |
BS Table H For Working Pressure above 150 lbs
and upto 250 lbs per sq inch |
Nominal pipe size |
Dia of Flange |
Dia of Bolt Circle |
No of Bolt |
Dia of Bolt |
Thickness |
Nominal pipe size |
Dia of flange |
Dia of Bolt Circle |
No. of Bolt |
Dia of Bolt |
Thickness |
1/2" |
3.3/4" |
2.5/8" |
4 |
1/2" |
3/8" |
1/2" |
3.3/4" |
2.5/8" |
4 |
5/8" |
1/2" |
3/4" |
4"" |
2.7/8" |
4 |
1/2" |
3/8" |
3/4" |
4.1/2" |
3.1/4" |
4 |
5/8" |
1/2" |
1" |
4.3/4" |
3.7/16" |
4 |
5/8" |
3/8" |
1" |
4.3/4" |
3.7/16" |
4 |
5/8" |
9/16" |
1.1/4" |
5.1/4" |
3.7/8" |
4 |
5/8" |
1/2" |
1.1/4" |
5.1/4" |
3.7/8" |
4 |
5/8" |
11/16" |
1.1/2" |
5.1/2" |
4.1/8" |
4 |
5/8" |
1/2" |
1.1/2" |
5.1/2" |
4.1/8" |
4 |
5/8" |
11/16" |
2" |
6.1/2" |
5" |
4 |
5/8" |
5/8" |
2" |
6.1/2" |
5" |
4 |
5/8" |
3/4" |
2.1/2" |
7.1/4" |
5.3/4" |
8 |
5/8" |
5/8" |
2.1/2" |
7.1/4" |
5.3/4" |
8 |
5/8" |
3/4" |
3" |
8" |
6.1/2" |
8 |
5/8" |
5/8" |
3" |
8" |
6.1/2" |
8 |
5/8" |
7/8" |
3.1/2" |
8.1/2" |
7" |
8 |
5/8" |
3/4" |
3.1/2" |
8.1/2" |
7" |
8 |
5/8" |
7/8" |
4" |
9" |
7./2" |
8 |
5/8" |
3/4" |
4" |
9" |
7.1/2" |
8 |
5/8" |
1" |
5" |
11" |
9.14" |
8 |
3/4" |
7/8" |
5" |
11" |
9.14" |
8 |
3/4" |
1.1/8" |
6" |
12" |
10.1/4" |
12 |
3/4" |
7/8" |
6" |
12" |
10.1/4" |
12 |
3/4" |
1.1/8" |
7" |
13.1/4" |
11.1/2" |
12 |
3/4" |
7/8" |
7" |
13.1/4" |
11.1/2" |
12 |
3/4" |
1.1/4" |
8" |
14.1/2" |
12.3/4" |
12 |
3/4" |
1" |
8" |
14.1/2" |
12.3/4" |
12 |
3/4" |
1.1/4" |
9" |
16" |
14" |
12 |
7/8" |
1" |
9" |
6" |
14" |
12 |
7/8" |
1.3/8" |
10" |
17" |
15" |
12 |
7/8" |
1" |
10" |
17" |
15" |
12 |
7/8" |
1.3/8" |
12" |
19.1/4" |
17.1/4" |
16 |
7/8" |
1.1/8" |
12" |
19.1/4" |
17.1/4" |
16 |
7/8" |
1.1/2" |
14" |
21.3/4" |
19.1/2" |
16 |
1" |
1.1/4" |
14" |
21.3/4" |
19.1/2" |
16 |
1" |
1.5/8" |
16" |
24" |
21.3/4" |
20 |
1" |
1.1/4" |
16" |
24" |
21.3/4" |
20 |
1" |
1.3/4" |
18" |
26.1/2" |
24" |
20 |
1.1/8" |
1.3/8" |
18" |
26.1/2" |
24" |
20 |
1.1/8" |
1.7/8" |
20" |
29" |
26.1/2" |
24 |
1.1/8" |
1.1/2" |
20" |
29" |
26.1/2" |
24 |
1.1/8" |
2" |
24" |
33.1/2" |
30.3/4" |
24 |
1.1/4" |
1.1/2" |
24" |
33.1/2" |
30.3/4" |
24 |
1.1/4" |
2.1/4" |
For 1/2" and 5/8" Bolts the diameters of the holes 1/16" Larger
than the bolts for 3/4 bolts and size above, the diameter shall be 1/8" Larger
than the Bolts |
For 1/2" and 5/8" Bolts the diameters of the holes 1/16" Larger
than the bolts for 3/4 bolts and sizes above, the diameter shall be 1/8" Larger
than the Bolts. |
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BRITISH STANDARD PIPE FLANGE
BS Table J For Working Pressure above 250 lbs and upto 350 lbs per sq. inch |
BS Table K for Working Pressure above 350lbs and upto 450 lbs per sq. inch. |
Nominal pipe size |
OD OF Flange |
Dia of Bolt Circle |
No of Bolt |
Dia of Bolt |
Flange thickness |
Nominal pipe size |
Dia of flange |
Dia of Bolt Circle |
No of Bolt |
Dia of Bolt |
Flange Thickness |
1/2" |
4.1/2" |
3.1/4" |
4 |
5/8" |
5/8" |
1/2" |
4.1/2" |
3.1/4" |
4 |
5/8" |
3/4" |
3/4" |
4.1/2" |
3.1/4" |
4 |
5/8" |
5/8" |
3/4" |
4.1/2" |
3.1/4" |
4 |
5/8" |
3/4" |
1" |
4.3/4" |
3.7/16" |
4 |
5/8" |
3/4" |
1" |
5" |
3.3/4" |
4 |
5/8" |
7/8" |
1.1/4" |
5.1/4" |
4.7/8" |
4 |
5/8" |
3/4" |
1.1/4" |
5.1/4" |
3.7/8" |
4 |
5/8" |
7/8" |
1.1/2" |
5.1/2" |
4.1/8" |
4 |
5/8" |
7/8" |
1.1/2" |
6" |
4.1/2" |
4 |
3/4" |
1" |
2" |
6.1/2" |
5" |
4 |
3/4" |
1" |
2" |
6.1/2" |
5" |
8 |
5/8" |
1" |
2.1/2" |
7.1/4" |
5.3/4" |
8 |
3/4" |
1" |
2.1/2" |
7.1/4" |
5.3/4" |
8 |
3/4" |
1.1/8" |
3" |
8" |
6.1/2" |
8 |
3/4" |
1.1/4" |
3" |
8" |
6.1/2" |
8 |
3/4" |
1.1/4" |
3.1/2" |
8.1/2" |
7" |
8 |
3/4" |
1.1/4" |
3.1/2" |
9" |
7.1/4" |
8 |
7/8" |
1.1/4" |
4" |
9" |
7.1/2" |
8 |
3/4" |
1.3/8" |
4" |
9.1/2" |
7.3/4" |
8 |
7/8" |
1.3/8" |
5" |
11" |
9.1/4" |
8 |
7/8" |
1.1/2" |
5" |
11" |
9.1/4" |
12 |
7/8" |
1.5/8" |
6" |
12" |
10.1/4" |
12 |
7/8" |
1.1/2" |
6" |
12" |
10.1/4" |
12 |
7/8" |
1.5/8" |
7" |
13.1/4" |
11.1/2" |
12 |
7/8" |
1.5/8" |
7" |
13.1/2" |
11.1/2" |
12 |
1" |
1.3/4" |
8" |
14.1/2" |
12.3/4" |
12 |
7/8" |
1.5/8" |
8" |
14.1/2" |
12.1/2" |
12 |
1" |
1.7/8" |
9" |
16" |
14" |
12 |
1" |
1.3/4" |
9" |
16" |
14" |
16 |
1" |
2" |
10" |
17" |
15" |
12 |
1" |
1.7/8" |
10" |
17" |
15" |
16 |
1" |
2" |
12" |
19.1/4" |
17.1/4" |
16 |
1" |
2" |
12" |
19.1/4" |
17" |
16 |
1.1/8" |
2.1/4" |
14" |
21.3/4" |
19.1/2" |
16 |
1.1/8" |
2.1/8" |
14" |
21.3/4" |
19.1/2" |
16 |
1.1/8" |
2.1/8" |
16" |
24" |
21.3/4" |
20 |
1.1/8" |
2.1/4" |
16" |
24.3/4" |
22.1/4" |
20 |
1.1/4" |
2.5/8" |
18" |
6.1/2" |
24" |
20 |
1.1/4" |
2.3/8" |
18" |
28.1/4" |
25.3/4" |
20 |
1.3/8" |
3" |
20" |
29" |
26.1/2" |
24 |
1.1/4" |
2.1/2" |
20" |
31" |
28" |
20 |
1.1/2" |
3.1/4" |
24" |
33.1/2" |
30.3/4" |
24 |
1.3/8" |
2.3/4" |
|
|
|
|
|
|
For 1/2" and 5/8" Bolts the diameters of the holes 1/16" Larger
than the bolts for 3/4 bolts and sizes above,the diameter shall be 1/8" Larger
than the Bolts. |
For 5/8" Bolts the diameters of the hole 1/16" Larger than the
bolts for 3/4 bolts and sizes above, the diameter shall be 1/8" Larger than the
Bolts. |
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Copyright 2001
Kan-Vick
Industries.
All Rights Reserved |
|
|