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FORGED FLANGES 150# DIMENSION AS PER ANSI B 16.5
Dimensions for Class 150 Flanges
Pipe Size (inches)
O
Q
R
X
No. of Holes
Dia. of Bolt Holes
Bolt Circle Dia
YY
H
J
Y
B
R
YY
BB
Z
1/2
88.9
11.2
35.1
30.2
4
15.7
60.5
47.8
21.3
15.7
15.7
22.4
3.0
15.7
22.9
9.7
3/4
98.6
12.7
42.9
38.1
4
15.7
69.9
52.3
26.7
20.8
15.7
27.7
3.0
15.7
28.2
11.2
1
108.0
14.2
50.8
49.3
4
15.7
79.2
55.6
33.5
26.7
17.5
34.5
3.0
17.5
35.1
12.7
1 1/4
117.3
15.7
63.5
58.7
4
15.7
88.9
57.2
42.2
35.1
20.6
43.2
4.8
20.6
43.7
14.2
1 1/2
127.0
17.3
73.2
65.0
4
15.7
98.6
62.0
48.3
40.9
22.4
49.5
6.4
22.4
50.0
15.7
2
152.4
19.1
91.9
77.7
4
19.1
120.7
63.5
60.5
52.6
25.4
62.0
7.9
25.4
62.5
17.5
21/2
177.8
22.4
104.6
90.4
4
19.1
139.7
69.9
73.2
62.7
28.4
74.7
7.9
28.4
75.4
19.1
3
190.5
23.9
127.0
108.0
4
19.1
152.4
69.9
88.9
78.0
30.2
90.7
9.7
30.2
91.4
20.6
31/2
215.9
23.9
139.7
122.2
8
19.1
177.8
71.4
101.6
90.2
31.8
1033.8
9.7
31.8
104.1
4
228.6
23.9
157.2
134.9
8
19.1
190.5
76.2
114.3
102.4
33.3
116.1
11.2
33.3
116.8
5
254.0
23.9
185.7
163.6
8
22.4
215.9
88.9
141.2
128.3
36.6
143.8
11.2
36.6
144.5
6
279.4
25.4
215.9
192.0
8
22.4
241.3
88.9
168.4
154.2
39.6
170.7
12.7
39.6
171.5
8
342.9
28.4
269.7
246.1
8
22.4
298.5
101.6
219.2
202.7
44.5
221.5
12.7
44.5
222.3
10
406.4
30.2
323.9
304.8
12
25.4
362.0
101.6
273.1
254.5
49.3
276.4
12.7
49.3
277.4
12
482.6
31.8
381.0
365.3
12
25.4
431.8
114.3
323.9
304.8
55.6
327.2
12.7
55.6
328.2
14
533.4
35.1
412.8
400.1
12
28.4
476.3
127.0
355.6
To Be Specified by the Purchaser
57.2
359.2
12.7
79.2
360.2
16
596.9
36.6
469.9
457.2
16
28.4
539.8
127.0
406.4
63.5
410.5
12.7
87.4
411.2
18
635.0
39.6
533.4
505.0
16
31.8
577.9
139.7
457.2
68.3
461.8
12.7
96.8
462.3
20
698.5
42.9
584.2
558.8
20
31.8
635.0
144.5
508.0
73.2
513.1
12.7
103.1
514.4
24
812.8
47.8
692.2
663.4
20
35.1
749.3
152.4
609.6
82.6
616.0
12.7
111.3
616.0
© 2010
Yash Impex
All rights reserved
Exporters and Suppliers of Iron & Steel Products
