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52
DIMENSIONS OF SLIP ON FLANGES • ANSI B16.5-1988
CLASS 150
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3½
3.7/8
4½
4.5/8
5
6
7
7½
8½
9
10
88.9
98.4
108.0
117.5
127.0
152.4
177.8
190.5
215.9
228.6
254.0
7/16
½
9/16
5/8
11/16
¾
7/8
15/16
15/16
15/16
15/16
11.
12.7
14.3
15.9
17.5
19.1
22.2
23.8
23.8
23.8
23.8
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.1
104.8
127.0
139.7
157.2
185.7
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.57
5.66
22.40
27.70
34.50
43.20
49.50
62.00
74.70
90.70
103.40
116.10
143.80
5/8
5/8
11/16
13/16
7/8
1
1.1/8
1.3/16
1¼
1.5/16
1.7/16
15.9
15.9
17.5
20.6
22.2
25.4
28.6
30.2
31.8
33.3
38.5
1.3/16
1½
1.15/16
2.5/16
2.9/16
3.1/16
3.9/16
4¼
4.13/16
5.5/16
6.7/16
30.2
38.1
49.2
58.7
65.1
77.8
90.5
108.0
122.2
134.9
163.5
4
4
4
4
4
4
4
4
8
8
8
½
½
½
½
½
5/8
5/8
5/8
5/8
5/8
¾
12.7
12.7
12.7
12.7
12.7
15.9
15.9
15.9
15.9
15.9
19.1
2.3/8
2¾
3.1/8
3½
3.7/8
4¾
5½
6
7
7½
8½
60.3
69.9
79.4
88.9
98.4
120.7
139.7
152.4
177.8
190.5
215.9
53
CLASS 150
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
6
8
10
12
14
16
18
20
22
24
11
13½
16
19
21
23½
25
27½
29½
32
279.4
342.9
406.4
482.6
533.4
596.9
635.0
698.5
749.3
812.8
1
1.1/8
1.3/16
1¼
1.3/8
1.7/16
1.9/16
1.11/16
1.13/16
1.7/8
25.4
28.6
30.2
31.8
34.9
36.5
39.7
42.9
46.0
47.6
8½
10.5/8
12¾
15
16¼
18½
21
23
25¼
27¼
215.9
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
22.22
24.25
170.70
221.50
276.40
327.20
359.20
410.50
461.80
513.10
564.40
616.00
1.9/16
1¾
1.15/16
2.3/16
2¼
2½
2.11/16
2.7/8
3.1/8
3.1/4
39.7
44.5
49.2
55.6
57.2
63.5
68.3
73.0
79.4
82.6
7.9/16
9.11/16
12
14.3/8
15¾
18
19.7/8
22
24
26.1/8
192.1
246.1
304.8
365.1
400.1
457.2
504.8
558.8
609.6
663.6
8
8
12
12
12
16
16
20
20
20
¾
¾
7/8
7/8
1
1
1.1/8
1.1/8
1¼
1¼
19.1
19.1
22.2
22.2
25.4
25.4
28.6
28.6
31.8
31.8
9½
11¾
14¼
17
18¾
21¼
22¾
25
27¼
29½
241.3
298.5
362.0
431.8
476.3
539.8
577.9
635.0
692.2
749.3
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
54
DIMENSIONS OF SLIP ON FLANGES • ANSI 816.5-1988
CLASS 300
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3¾
4.5/8
4.7/8
5¼
6.1/8
6½
6½
8¼
9
10
11
95.3
117.5
123.8
133.4
155.6
165.1
190.5
209.6
228.6
254.0
279.4
9/16
5/8
11/16
¾
13/16
7/8
1
1.1/8
1.3/16
1¼
1.3/8
14.3
15.9
17.5
19.1
20.6
22.2
25.4
28.6
30.2
31.8
34.9
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.1
104.8
127.0
139.7
157.2
185.7
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.57
5.66
22.40
27.70
34.50
43.20
49.50
62.00
74.70
90.70
103.40
116.10
143.80
7/8
1
1.1/16
1.1/16
1.3/16
1.5/16
1½
1.11/16
1¾
1.7/8
2
22.2
25.4
27.0
27.0
30.2
33.3
38.1
42.9
44.5
47.6
50.8
1½
1.7/8
2.1/8
2½
2¾
3.5/16
3.15/16
4.5/8
5¼
5¾
7
38.1
47.6
54.0
63.5
69.9
84.1
100.0
117.5
133.4
146.1
177.8
4
4
4
4
4
8
8
8
8
8
8
½
5/8
5/8
5/8
¾
5/8
¾
¾
¾
¾
¾
12.7
15.9
15.9
15.9
19.1
15.9
19.1
19.1
19.1
19.1
19.1
2.5/8
3¼
3½
3.7/8
4½
5
5.7/8
6.5/8
7¼
7.7/8
9¼
66.7
82.6
88.9
98.4
114.3
127.0
149.2
168.3
184.2
200.0
235.0
55
CLASS 300
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
12½
15
17½
20½
23
25½
28
30½
33
36
317.5
381.0
444.5
520.7
584.2
647.7
711.2
774.7
838.2
914.4
1.7/16
1.5/8
1.7/8
2
2.1/8
2¼
2.3/8
2½
2.5/8
2¾
36.5
41.3
47.6
50.8
54.0
57.2
60.3
63.5
66.7
69.9
8½
10.5/8
12¾
15
16¼
18½
21
23
25¼
27¼
215.9
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
8.72
10.88
12.88
14.14
16.16
18.18
20.20
22.22
24.25
6.72
221.50
276.40
327.20
359.20
410.50
461.80
513.10
564.40
616.00
170.70 2.1/16
2.7/16
2.5/8
2.7/8
3
3¼
3½
3¾
4
4.3/16
52.4
61.9
66.7
73.0
76.2
82.6
88.9
95.3
101.6
106.4
8.1/8
10¼
12.5/8
14¾
16¾
19
21
23.1/8
25¼
27.5/8
206.4
260.4
320.7
374.7
425.5
482.6
533.4
587.4
641.4
701.7
12
12
16
16
20
20
24
24
24
24
7/8
1
1.1/8
1.1/8
11;4
1 ¼
1¼
1½
1½
¾
8
10
12
14
16
18
20
22
24
6 19.1
22.2
25.4
28.6
28.6
31.8
31.8
31.8
38.1
38.1
10.5/8
13
15¼
17¾
20¼
22½
24¾
27
29½
32
269.9
330.2
387.4
450.9
514.4
571.5
628.7
685.8
743.0
812.8
56
DIMENSIONS OF SLIP ON FLANGES • ANSI B16.5-1988
CLASS 600
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3¾
4.5/8
4.7/8
5¼
6.1/8
6½
6½
8¼
9
10¾
13
95.3
117.5
123.8
133.4
155.6
165.1
190.5
209.6
228.6
273.1
330.2
9/16
5/8
11/16
13/16
7/8
1
1.1/8
1¼
1.3/8
1½
1¾
14.3
15.9
17.5
20.6
22.2
25.4
28.6
31.8
34.9
38.1
44.5
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.1
104.8
127.0
139.7
157.2
185.7
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.57
5.66
22.40
27.70
34.50
43.20
49.50
62.00
74.70
90.70
103.40
116.10
143.80
7/8
1
1.1/16
1.1/8
1¼
1.7/16
1.5/8
1.13/16
1.15/16
2.1/8
2.3/8
22.2
25.4
27.0
28.6
31.8
36.5
41.3
46.0
49.2
54.0
60.3
1½
1.7/8
2.1/8
2½
2¾
3.5/16
3.15/16
4.5/8
5¼
6
7.7/16
38.1
47.6
54.0
63.5
69.9
84.1
100.0
117.5
133.4
152.4
188.9
4
4
4
4
4
8
8
8
8
8
8
½
5/8
5/8
5/8
¾
5/8
¾
¾
7/8
7/8
1
12.7
15.9
15.9
15.9
19.1
15.9
19.1
19.1
22.2
22.2
25.4
2.5/8
3¼
3½
3.7/8
4½
5
5.7/8
6.5/8
7¼
8½
10½
66.7
82.6
88.9
98.4
114.3
127.0
149.2
168.3
184.2
215.9
266.7
57
CLASS 600
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch Inch mm Inch mmInch mmnmmInchmmInchmmInchmmInchmmInch
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
8
10
12
14
16
18
20
22
24
6 14
16½
20
22
23¾
27
29¼
32
34¼
37
355.6
419.1
508.0
558.8
603.3
685.8
743.0
812.8
870.0
939.8
1.7/8
2.3/16
2½
2.5/8
2¾
3
3¼
3½
3¾
4
47.6
55.6
63.5
66.7
69.9
76.2
82.6
88.9
95.3
101.6
8½
10.5/8
12¾
15
16¼
18½
21
23
25¼
27¼
215.9
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
22.22
24.25
170.70
221.50
276.40
327.20
359.20
410.50
461.80
513.10
564.40
616.00
2.5/8
3
3.3/8
3.5/8
3.11/16
4.3/16
4.5/8
5
5¼
5½
66.7
76.2
85.7
92.1
93.7
106.4
117.5
127.0
133.4
139.7
8¾
10¾
13½
15¾
17
18½
21½
24
26¼
28¼
222.3
273.1
342.9
400.1
431.8
495.3
546.1
609.6
666.8
717.6
12
12
16
20
20
20
22
24
24
24
1
1.1/8
1¼
1¼
1.3/8
1½
1,5/8
1.5/8
1¾
1.7/8
25.4
28.6
31.8
31.8
34.9
38.1
41.3
41.3
44.5
47.6
11½
13¾
17
19¼
29¾
23¾
25¾
28½
30.5/8
33
292.1
349.3
431.8
489.0
527.1
603.3
654.1
723.9
777.9
838.2
58
IMENSIONS OF WELD NECK FLANGES • ANSI B16.5-1988
CLASS 150
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3¼
3.7/8
4¼
4.5/8
5
6
7
7½
8½
9
10
88.9
98.4
108.0
117.5
127.0
152.4
177.8
190.5
215.9
228.6
254.0
7/16
½
9/16
5/8
11/16
¾
7/8
15/16
15/16
15/16
15/16
11.1
12.7
14.3
15.9
17.5
19.1
22.2
23.8
23.8
23.8
23.8
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.1
104.8
127.0
139.7
157.2
185.7
0.62
0.82
1.05
1.38
1.61
2.07
2.47
3.07
3.55
4.03
5.05
15.75
20.83
26.67
35.05
40.89
52.58
62.75
77.98
90.17
102.36
128.27
1.7/8
2.1/16
2.3/16
2¼
2.7/16
2½
2¾
2¾
2.13/16
3
3½
47.6
52.4
55.6
57.2
61.9
63.5
69.9
69.9
71.4
76.2
88.9
1.3/16
1½
1.15/16
2.5/16
2.9/16
3.1/16
3.9/16
4¼
4.13/16
5.5/16
6.7/16
30.2
38.1
49.2
58.7
65.1
77.8
90.5
108.0
122.2
134.9
163.5
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
4
4
4
4
4
4
4
4
8
8
8
a½
½
½
½
½
5/8
5/8
5/8
5/8
5/8
¾
12.7
12.7
12.7
12.7
12.7
15.9
15.9
15.9
15.9
15.9
19.1
2.3/8
2¾
3.1/8
3½
3.7/8
4¾
5½
6
7
7½
8½
60.3
69.9
79.4
88.9
98.4
120.7
139.7
152.4
177.8
190.5
215.9
Diameter at Hub at Point ofWeight
H
mmInch
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
21.3
26.7
33.5
42.2
48.3
60.4
73.1
88.9
101.6
114.3
141.2
59
CLASS 150
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
8
10
12
14
16
18
20
22
24
6 11
13½
16
19
21
23½
25
27½
29½
32
279.4
342.9
406.4
482.6
533.4
596.9
635.0
698.5
749.3
812.8
1
1.1/8
1.3/16
1¼
1.3/8
1.7/16
1.9/16
1.11/16
1.13/16
1.7/8
25.4
28.6
30.2
31.8
34.9
36.5
39.7
42.9
46.0
47.6
8.1/2
10.5/8
12¾
15
16¼
18½
21
23
25¼
27¼
215.9
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
6.07
7.98
10.02
12.00
13.25
15.25
17.25
19.25
21.25
23.25
154.18
202.69
254.51
304.80
336.55
387.35
438.15
488.90
539.70
590.50
3½
4
4
4½
5
5
5½
5.1/16
5.7/8
6
88.9
101.6
101.6
114.3
127.0
127.0
139.7
144.5
149.2
152.4
7.9/16
9.11/16
12
14.3/8
15¾
18
19.7/8
22
24
26.1/8
192.1
246.1
304.8
365.1
400.1
457.2
504.8
558.8
609.6
663.6
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
8
8
12
12
12
16
16
20
20
20
¾
¾
7/8
7/8
1
1
1.1/8
1.1/8
1¼
1¼
19.1
19.1
22.2
22.2
25.4
25.4
28.6
28.6
31.8
31.8
9½
11¾
14¼
17
18¾
21¼
22¾
25
27¼
28½
241.3
298.5
362.0
431.8
476.3
539.8
577.9
635.0
692.2
749.3
Diameter at Hub at Point ofWeight
H
mmInch
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
22.00
24.00
168.4
219.2
273.0
323.8
355.6
406.4
457.2
508.0
558.8
609.6
60
DIMENSIONS OF WELD NECK FLANGES • ANSI B16.5-1988
CLASS 300
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3¾
4.5'/8
4.7/8
5¼
6.1/8
6½
7½
8¼
9
10
11
95.3
117.5
123.8
133.4
155.6
165.1
190.5
209.6
228.6
254.0
279.4
9/16
5/8
11/16
¾
13/16
7/8
1
1.1/8
1.3/16
1¼
1.3/8
14.3
15.9
17.5
19.1
20.6
22.2
25.4
28.6
30.2
31.8
34.9
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.1
104.8
127.0
139.7
157.2
185.7
0.62
0.82
1.05
1.38
1.61
2.07
2.47
3.07
3.55
4.03
5.05
15.75
20.83
26.67
35.05
40.89
52.58
62.74
77.98
90.17
102.36
128.27
2.1/16
2¼
2.7/16
2.9/16
2.11/16
2¾
3
3.1/8
3.3/16
3.3/8
3.7/8
52.4
57.2
61.9
65.1
68.3
69.9
76.2
79.4
81.0
85.7
98.4
1½
1.7/8
2.1/8
21/2
2¾
3.5/16
3.15/16
4.5/8
5¼
5¾
7
38.1
47.6
54.0
63.5
69.9
84.1
100.0
117.5
133.4
146.1
177.8
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
4
4
4
4
4
8
8
8
8
8
8
½
5/8
5/8
5/8
¾
5/8
¾
¾
¾
¾
¾
12.7
15.9
15.9
15.9
19.1
15.9
19.1
19.1
19.1
19.1
19.1
2.5/8
3¼
3½
3.7/8
4½
5
5.7/8
6.5/8
7¼
7.7/8
9¼
66.7
82.6
88.9
98.4
114.3
127.0
149.2
168.3
184.2
200.0
235.0
Diameter at Hub at Point ofWeight
H
mmInch
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
21.3
26.7
33.5
42.2
48.3
60.4
73.1
88.9
101.6
114.3
141.2
61
CLASS 300
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
8
10
12
14
16
18
20
22
24
6 12½
15
17½
20½
23
25½
28
30½
33
36
317.5
381.0
444.5
520.7
584.2
647.7
711.2
774.7
838.2
914.4
1.7/16
1.5/8
1.7/8
2
2.1/8
2¼
2.3/8
2½
2.5/8
2¾
36.5
41.3
47.6
50.8
54.0
57.2
60.3
63.5
66.7
69.9
8½
10.5/8
12¾
15
16
18¾
21
23
25¼
27¼
215.9
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
6.07
7.98
10.02
12.00
13.25
15.25
17.25
19.25
21.25
23.25
154.18
202.69
254.51
304.80
336.55
387.35
438.15
488.90
539.70
590.50
3.7/8
4.3/8
4.5/8
5.1/8
5.5/8
5¾
6¼
6.3/8
6½
6.5/8
98.4
111.1
117.5
130.2
142.9
146.1
158.8
161.9
165.1
168.3
8.1/8
10¼
12.5/8
14¾
16¾
19
21
23.1/8
25¼
27.5/8
206.4
260.4
32.07
374.7
425.5
482.6
533.4
587.4
641.3
701.7
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
12
12
16
16
20
20
24
24
24
24
¾
7/8
1
1.1/8
1.1/8
1¼
1¼
1¼
1½
1½
19.1
22.2
25.4
28.6
28.6
31.8
31.8
31.8
38.1
38.1
19.5/8
13
15¼
17¾
20½
22½
24¾
27
29¼
32
269.9
330.2
387.4
450.9
514.4
571.5
628.7
685.8
743.0
812.8
Diameter at Hub at Point ofWeight
H
mmInch
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
22.00
24.00
168.4
219.2
273.0
323.8
355.6
406.4
457.2
508.0
558.8
609.6
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
62
DIMENSIONS OF WELD NECK FLANGES • ANSI B16.5-1988
CLASS 600
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
3¾
4.5/8
4.7/8
5¼
6.1/8
6½
7½
8¼
9
10¾
13
92.5
117.5
123.8
133.4
155.6
165.1
190.5
209.6
228.6
273.1
330.2
9/16
5/8
11/16
13/16
7/8
1
1.1/8
1¼
1.3/8
1½
1¾
14.3
15.9
17.5
20.6
22.2
25.4
28.6
31.8
34.9
38.1
44.5
1.3/8
1.11/16
2
2½
2.7/8
3.5/8
4.1/8
5
5½
6.3/16
7.5/16
34.9
42.9
50.8
63.5
73.0
92.11
104.8
127.0
139.7
157.2
185.7
0.55
0.74
0.96
1.28
1.50
1.94
2.32
2.90
3.36
3.83
4.81
14.00
18.80
24.40
32.50
38.10
49.30
58.90
73.70
85.30
97.30
122.20
2.1/16
2¼
2.7/16
2.5/8
2¾
2.7/8
3.1/8
3¼
3.3/8
4
4½
52.4
57.2
61.9
66.7
69.9
73.0
79.4
82.6
85.7
101.6
114.3
1½
1.7/8
2.1/8
2½
2¾
3.5/16
3.15/16
4.5/8
5¼
6
7.7/16
38.1
47.6
54.0
63.5
69.9
84.1
100.0
117.5
133.4
152.4
188.9
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
4
4
4
4
4
8
8
8
8
8
8
½
5/8
5/8
5/8
¾
5/8
¾
¾
7/8
7/8
1
12.7
15.9
15.9
15.9
19.1
15.9
19.1
19.1
22.2
22.2
25.4
2.5/8
3¼
3½
3.7/8
4½
5
5.7/8
6.5/8
7¼
8½
10½
66.7
82.6
88.9
98.4
114.3
127.0
149.2
168.3
184.2
215.9
266.7
Diameter at Hub at Point ofWeight
H
mmInch
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
21.3
26.7
33.5
42.2
48.3
60.4
73.1
88.9
101.6
114.3
141.2
63
CLASS 600
Nominal Pipe Size
Outisde Diameter of Flange
0
Thickness of Flange
(min)
Q
Diameter of Raised
Face
R
Diameter of
Bore
J
Length Through
Hub
Y
Diameter at Hub at
Base
X
Inch Inch mm mmInchmmInchmmInchmmInchmmInch
8
10
12
14
16
18
20
22
24
6 14
16½
20
22
23¾
27
29¼
32
34¼
37
355.6
419.1
508.0
558.8
603.3
685.8
743.0
812.8
870.0
939.8
1.7/8
2.3/16
2¼
2.5/8
2¾
3
3
3½
3¾
4
47.6
55.6
63.5
66.7
69.9
76.2
82.6
88.9
95.3
101.6
8½
10.5/8
12¾
15
16¼
18½
21
23
25¼
27¼
2159
269.9
323.9
381.0
412.8
469.9
533.4
584.2
641.4
692.2
5.76
7.63
9.75
11.75
146.30
193.80
247.70
298.40
4.5/8
5¼
6
6.1/8
6½
7
7¼
7½
7¾
8
117.5
133.4
152.4
155.6
165.1
177.8
184.2
190.5
196.9
203.2
8¾
10¾
13½
15¾
17
19½
21½
24
26¼
28¼
222.3
273.1
342.9
400.1
431.8
495.3
546.1
609.6
666.8
717.6
Numberof Bolt Holes
Diameter of
Bolt
Diameter of Bolt Circle
P
Inch mmInch mmn
12
12
16
20
20
20
20
24
24
24
1
1.1/8
1¼
1¼
1.3/8
1½
1.5/8
1.5/8
1¾
1.7/8
25.4
28.6
31.8
31.8
34.9
38.1
41.3
41.3
44.5
47.6
11½
13¾
17
19¼
20¾
23¾
25¾
28½
30.5/8
33
292.1
349.3
431.8
489.0
527.1
603.3
654.1
723.9
777.9
838.2
Diameter at Hub at Point ofWeight
H
mmInch
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
22.00
24.00
168.4
219.2
273.0
3.23.8
355.6
406.4
457.2
508.0
558.8
609.6
NOTES: Dimensions of Thickness Q & of Length through Hub Y include thickness of raised face 1/16 inch (1.6mm) Diameter of bolt-holes shall not be 1/8" (3.2mm) greater than the diameter of bolt.
As
Specified
by
Purchaser
M. S. FLAT FACE OR RAISED FACE • P N - 10
ALL DIMENSIONS IN MM.
Dia ofFlange
D
Thickness
T
Nos. ofHoles
Bolt CircleDiam.
P
Raised Face
DiamR
ThickF
90
95
105
115
140
150
165
185
200
14
14
16
16
18
18
20
20
22
40
45
58
68
78
88
102
122
138
2
2
2
2
2
3
3
3
3
60
65
75
85
100
110
125
145
160
4
4
4
4
4
4
4
8
64
NominalBore
Dia ofHoles
B
10
15
20
25
32
40
50
65
80
14
14
14
14
18
18
18
18
18
IS 1538
65
ALL DIMENSIONS IN MM.
NominalBore
Dia ofFlange
D
Thickness
T
Dia ofHoles
B
Nos. ofHoles
Bolt CircleDiam.
P
Raised Face
DiamR
ThickF
100
125
150
200
250
300
350
400
450
500
600
700
800
220
250
285
340
395
445
505
565
615
670
780
895
1015
22
24
24
26
28
28
30
32
32
38
42
46
52
158
188
212
268
320
370
430
482
532
585
685
800
905
3
3
3
3
3
4
4
4
4
4
5
5
5
180
210
240
295
350
400
460
515
565
620
725
840
950
8
8
8
8
12
12
16
16
20
20
20
24
24
18
18
22
22
22
22
22
26
26
26
30
30
33
66
DIMENSIONS OF PLAIN FLANGES • B. S. 10 : 1962
TABLE-D : For Working Steam Pressure upto 50 lbs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
6
--
27/32
1.1/16
1.11/32
1.11/16
1.23/32
2.3/8
3
3½
4
4½
5½
6½
6.5/8
21.43
26.99
34.13
42.86
48.42
60.33
76.20
88.90
101.60
114.30
139.70
165.10
168.28
3¾
4
4½
4¾
5¼
6
6½
7¼
8
8½
10
11
--
95.25
101.60
114.30
120.65
133.35
152.40
165.10
184.15
203.20
215.90
254.00
279.40
--
2.5/8
2.7/8
3¼
3.7/16
3.7/8
4½
5
5¾
6½
7
8¼
9¼
--
66.68
73.03
82.55
87.31
98.43
114.30
127.00
146.05
165.10
177.80
209.55
234.95
--
4
4
4
4
4
4
4
4
4
4
8
8
--
½
½
½
½
½
5/8
5/8
5/8
5/8
5/8
5/8
5/8
--
12.70
12.70
12.70
12.70
12.70
15.88
15.88
15.88
15.88
15.88
15.88
15.88
--
3/16
3/16
3/16
¼
¼
5/16
5/16
3/8
3/8
3/8
½
½
--
4.76
4.76
4.76
6.35
6.35
7.94
7.94
9.53
9.53
9.53
12.70
12.70
--
67
TABLE-D : For Working Steam Pressure upto 50 lbs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
NOTE : B* - For 1/2" & 5/8" Bolts, diameter of holes shall be 1/16" (1.6mm) larger than the bolt and for 3/4" bolts & sizes above, diameter of hole shall be not more than 1/8" (3.2mm) larger than the bolts.
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
7.5/8
8.5/8
9.5/8
10¾
12¾
14
15
16
-
18
-
20
-
22
-
24
-
193.68
219.08
244.48
273.05
323.85
355.60
381.00
406.40
-
457.20
-
508.00
-
558.80
-
609.60
-
12
13¾
14½
15
18
19¾
20¾
21¾
22¾
24
25¼
26½
27¾
29
30
31
32½
304.80
336.55
368.30
406.40
457.20
488.95
527.05
552.45
577.85
609.60
641.35
673.10
704.85
736.60
762.00
787.40
825.50
10¼
11½
12¾
14
16
17¼
18½
19½
20½
21¾
23
24
25¼
26½
27½
28½
29¾
260.35
292.10
323.85
355.60
406.40
438.15
469.90
495.30
520.70
552.45
584.20
609.60
641.35
673.10
698.50
723.90
755.65
8
8
8
8
12
12
12
12
12
12
12
12
16
16
16
16
16
5/8
5/8
5/8
¾
¾
¾
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
1
1
1
15.88
15.88
15.88
19.05
19.05
19.05
22.23
22.23
22.23
22.23
22.23
22.23
22.23
22.23
25.40
25.40
25.40
½
½
5/8
5/8
¾
¾
7/8
7/8
7/8
1
1
1
1.1/8
1.1/8
1.1/8
1.1/8
1¼
12.70
12.70
15.88
15.88
19.05
19.05
22.23
22.23
22.23
25.40
25.40
25.40
28.58
28.53
28.53
28.53
31.75
68
DIMENSIONS OF PLAIN FLANGES • B. s. 10 : 1962
TABLE-E: For Working Steam Pressure above 50 & upto 100 Ibs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
6
--
27/32
1.1/16
1.11/32
1.11/16
1.23/32
2.3/8
3
3½
4
4½
5½
6½
6.5/8
21.43
26.99
34.13
42.86
48.42
60.33
76.20
88.90
101.60
114.30
139.70
165.10
168.28
3¾
4
4½
4¾
5¼
6
6½
7¼
8
8½
10
11
--
95.25
101.60
114.30
120.65
133.35
152.40
165.10
184.15
203.20
215.90
254.00
279.40
--
2.5/8
2.7/8
3¼
3.7/16
3.7/8
4½
5
5¾
6½
7
8¼
9¼
--
66.68
73.03
82.55
87.31
98.43
114.30
127.00
146.05
165.10
177.80
209.55
234.95
--
4
4
4
4
4
4
4
4
4
4
8
8
--
½
½
½
½
½
5/8
5/8
5/8
5/8
5/8
5/8
¾
--
12.70
12.70
12.70
12.70
12.70
15.88
15.88
15.88
15.88
15.88
15.88
19.05
--
¼
¼
9/32
5/16
11/32
3/8
13/32
7/16
15/32
½
9/16
11/16
--
6.35
6.35
7.14
7.94
8.73
9.53
10.32
11.11
11.91
12.70
14.29
17.46
--
69
TABLE-E : For Working Steam Pressure upto 50 lbs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
NOTE : B* - For 1/2" & 5/8" Bolts, diameter of holes shall be 1/16" (1.6mm) larger than the bolt and for 3/4" bolts & sizes above, diameter of hole shall be not more than 1/8" (3.2mm) larger than the bolts.
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
7.5/8
8.5/8
9.5/8
10¾
12¾
14
15
16
-
18
-
20
-
22
-
24
-
193.68
219.08
244.48
273.05
323.85
355.60
381.00
406.40
-
457.20
-
508.00
-
558.80
-
609.60
-
12
13¾
14½
15
18
19¾
20¾
21¾
22¾
24
25¼
26½
27¾
29
30
31
32½
304.80
336.55
368.30
406.40
457.20
488.95
527.05
552.45
577.85
609.60
641.35
673.10
704.85
736.60
762.00
787.40
825.50
10¼
11½
12¾
14
16
17¼
18½
19½
20½
21¾
23
24
25¼
26½
27½
28½
29¾
260.35
292.10
323.85
355.60
406.40
438.15
469.90
495.30
520.70
552.45
584.20
609.60
641.35
673.10
698.50
723.90
755.65
8
8
12
12
12
12
12
12
12
12
16
16
16
16
16
16
16
¾
¾
¾
¾
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
1
1
1
1.1/8
19.05
19.05
19.05
19.05
22.23
22.23
22.23
22.23
22.23
22.23
22.23
22.23
22.23
25.40
25.40
25.40
28.58
¾
¾
13/16
7/8
1
1
1.1/8
1¼
1¼
1.3/8
1.3/8
1½
1½
1.5/8
1.3/8
1.3/8
1.7/8
19.05
19.05
20.64
22.23
25.40
25.40
28.58
31.75
31.75
34.93
34.93
38.10
38.10
41.28
44.45
44.45
47.63
70
DIMENSIONS OF PLAIN FLANGES • B. S. 10 : 1962
TABLE-F : For Working Steam Pressure above 100 & upto 150 Ibs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
½
¾
1
1¼
1½
2
2½
3
3½
4
5
6
--
27/32
1.1/16
1.11/32
1.11/16
1.23/32
2.3/8
3
3½
4
4½
5½
6½
6.5/8
21.43
26.99
34.13
42.86
48.42
60.33
76.20
88.90
101.60
114.30
139.70
165.10
168.28
3¾
4
4¾
5¼
5½
6½
7¼
8
8½
9
11
12
--
95.25
101.60
120.65
133.35
139.70
165.10
184.15
203.20
215.90
228.60
279.40
304.80
--
2.5/8
2.7/8
3.7/16
3.7/8
4½
5
5¾
6½
7
7½
9¼
10¼
--
66.68
73.03
87.31
98.43
104.78
127.00
146.05
165.10
177.80
190.50
234.95
260.35
--
4
4
4
4
4
4
8
8
8
8
8
12
--
½
½
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
¾
¾
--
12.70
12.70
15.88
15.88
15.88
15.88
15.88
15.88
15.88
15.88
19.05
19.05
--
¾
¾
9/32
½
½
5/8
5/8
5/8
¾
¾
7/8
7/8
--
9.53
9.53
9.53
12.70
12.70
15.88
15.88
15.88
19.05
19.05
22.23
22.23
--
71
TABLE-F : For Working Steam Pressure upto 50 lbs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
NOTE : B* - For 1/2" & 5/8" Bolts, diameter of holes shall be 1/16" (1.6mm) larger than the bolt and for 3/4" bolts & sizes above, diameter of hole shall be not more than 1/8" (3.2mm) larger than the bolts.
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
7.5/8
8.5/8
9.5/8
10¾
12¾
14
15
16
-
18
-
20
-
22
-
24
-
193.68
219.08
244.48
273.05
323.85
355.60
381.00
406.40
-
457.20
-
508.00
-
558.80
-
609.60
-
13¾
14½
16
17
19¼
20¾
21¾
22¾
24
25¼
26½
27¾
29
30
31
32½
33½
336.55
368.30
406.40
431.80
488.95
527.05
552.45
577.85
609.60
641.35
673.10
704.85
736.60
762.00
787.40
825.50
850.90
11½
12¾
14
15
17¼
18½
19½
20½
21¾
23
24
25¼
26½
27½
28½
29¾
30¾
292.10
323.85
355.60
381.00
438.15
469.90
495.30
520.70
552.45
584.20
609.60
641.35
673.10
698.50
723.90
755.65
781.05
12
12
12
12
16
16
16
16
20
20
20
20
24
24
24
24
24
¾
¾
7/8
7/8
7/8
1
1
1
1
1
1.1/8
1.1/8
1.1/8
1.1/8
1.1/8
1¼
1¼
19.05
19.05
22.23
22.23
22.23
25.40
25.40
25.40
25.40
25.40
28.58
28.58
28.58
28.58
28.58
31.75
31.75
7/8
1
1.1/8
1.1/8
1¼
1.3/8
1.3/8
1½
1½
1¾
1¾
1¾
2
2
2.1/8
2¼
2¼
22.23
25.40
28.58
28.58
31.75
34.93
34.93
38.10
41.28
44.45
44.45
44.45
50.80
50.80
53.98
57.15
57.15
72
DIMENSIONS OF PLAIN FLANGES • B. S. 10 : 1962
TABLE-H : For Working Steam Pressure above 150 & upto 250 Ibs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
½
¾
1
1¼
1¼
2
2½
3
3½
4
5
6
--
27/32
1.1/16
1.11/32
1.11/16
1.23/32
2.3/8
3
3½
4
4½
5½
6½
6.5/8
21.43
26.99
34.13
42.86
48.42
60.33
76.20
88.90
101.60
114.30
139.70
165.10
168.28
4½
4½
4¾
5¼
5½
6½
7¼
8
8½
9
11
12
--
114.30
114.30
120.65
133.35
139.70
165.10
184.15
203.20
215.90
228.60
279.40
304.80
--
3¼
3¼
3.7/16
3.7/8
4.1/8
5
5¾
6½
7
7½
9¼
10¼
--
82.55
82.55
87.31
98.43
104.78
127.00
146.05
165.10
177.80
190.50
234.95
260.35
--
4
4
4
4
4
4
8
8
8
8
8
12
--
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
¾
¾
--
15.88
15.88
15.88
15.88
15.88
15.88
15.88
15.88
15.88
15.88
19.05
19.05
--
½
½
9/16
11/16
11/16
¾
¾
7/8
7/8
1
1.1/8
1.1/8
--
12.70
12.70
14.29
17.46
17.46
19.05
19.05
22.23
22.23
25.40
28.58
28.58
--
73
TABLE-H : For Working Steam Pressure upto 50 lbs./sq. inch
Flange Size Designation
(Nominal Bore of Pipe)
Inch Inch mm
Approx. Outside Diameter of Steel Pipe
H
Diameter of
Flange
Bolt Circle
Diameter
Number of Bolt Holes
Diameter of
Bolts
Thickness
D P N B* T
mm mm mmmmInch Inch Nos. Inch Inch
NOTE : B* - For 1/2" & 5/8" Bolts, diameter of holes shall be 1/16" (1.6mm) larger than the bolt and for 3/4" bolts & sizes above, diameter of hole shall be not more than 1/8" (3.2mm) larger than the bolts.
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
8.5/8
9.5/8
10¾
12¾
14
15
16
-
18
-
20
-
22
-
24
-
7.5/8
219.08
244.48
273.05
323.85
355.60
381.00
406.40
-
457.20
-
508.00
-
558.80
-
609.60
-
193.68 13¼
14½
16
17
19¼
20¾
21¾
22¾
24
25¼
26½
27¾
29
30
31
32½
33½
336.55
368.30
406.40
431.80
488.95
527.05
552.45
577.85
609.60
641.35
673.10
704.85
736.60
762.00
787.40
825.50
850.90
11½
12¾
14
15
17¼
18½
19½
20½
21¾
23
24
25¼
26½
27½
28½
29¾
30¾
292.10
323.85
355.60
381.00
438.15
469.90
495.30
520.70
552.45
584.20
609.60
641.35
673.10
698.50
723.90
755.65
781.05
12
12
12
12
16
16
16
16
20
20
20
20
24
24
24
24
24
¾
¾
7/8
7/8
7/8
1
1
1
1
1
1.1/8
1.1/8
1.1/8
1.1/8
1.1/8
1¼
1¼
19.05
19.05
22.23
22.23
22.23
25.40
25.40
25.40
25.40
25.40
28.58
28.58
28.58
28.58
28.58
31.75
31.75
1¼
1¼
1.3/8
1.3/8
1.5/8
1¾
1.7/8
2
2.1/8
2¼
2.3/8
2½
2.5/8
2¾
2¾
3
3
31.75
31.75
34.93
34.93
41.28
44.45
47.63
50.80
53.98
57.15
60.33
63.50
66.68
69.85
69.85
76.20
76.20
74
DIMENSIONAL TOLERANCES FOR FLANGES • ANSI B - 16.5
Outside
Diameter
Inside
Diameter
Diameter
of Hub
at Base
Diameter
of
Contact
Face
When 0.0. is < or = 24"*(610 mm.)
> 24"(610 mm.)
Threaded
Slip-on and
Lap Joint :-
NPS < & = 10" (250 mm.)
NPS > & = 12" (300 mm.)
<&=12" (300 mm.)
>&=14"(350 mm.)
1/16" (1.6 mm.) Raised Face
1/4"(6.4 mm) Raised Face:
Tongue & Grooved
(Male / Female)
1/16" (1.6 mm)
1/8" (3.2 mm)
To Standard Gauge limits
1/32" (0.8 mm.)
0
1/16" (1.6 rnrn.)
0
3/32" (2.4 mm.)
1/16" (1.6 mm.)
1/8" (3.2 mm.)
1/32" (0.8 mm.)
1/64" (0.4 mm)
±
±
+
-
+
-
+
-
±
±
±
Outside
Diameter
Inside
Diameter
Diameter
of
Contact
Face
Diameter
of Hub
at Base
When D.O. is < or = 24" (610 mm.)
> 24" (610 mm.)
NPS<& =10" (250 mm.)
NPS is 12"(300 mm) to 18"(450 mm)
NPS>& = 20" (500 mm)
1/16" (1.6 mm.) Raised Face
1/4" (6.4 mm) Raised Face:
Tongue & Grooved
(Male / Female)
<& = 24" (610 mm)
>24" (610 mm)
1/16" (1.6 mm)
1/8" (3.2 mm)
1/32" (0.8 mm)
1/16" (1.6 mm)
1/8" (3.2 rnrn)
1/16" (1.6 mm)
1/32" (0.8 mm)
1/16" (1.6 mm)
1/16" (1.6 mm)
1/8" (3.2 mm)
±
±
±
±
+
-
±
±
±
±
75
DIMENSIONAL TOLERANCES FOR FLANGES • ANSI B - 16.5
Diameter
of
Counterbore
Drilling
Thickness
Length
Through
Hub
NPS < & = 10" (250 mm)
NPS > & = 12" (300 mm)
Bolt Circle Diameter
Bolt Hole Spacing
Eccentricity of Bolt Circle & Facing
with respect to Bore:
NPS <& = 2.5" (65 mm)
NPS>& = 3" (80 mm)
NPS<& = 18" (450 mm)
NPS >& = 20" (500 mm)
NPS <& = 10" (250 mm)
NPS >& = 12" (300 mm)
1/32" (O.8mm.)
0
1/16" (1.6mm.)
0
1/16(1.6mm)
1/32" (0.8 mm)
1/32"(0.8 mm)
1/16"(1.6 mm)
1/8" (3.2 mm)
0
3/16" (4.8 mm)
0
1/16"(1.6 mm)
1/8" 3.2 mm)
Diameter of
Hab at Point
01 Welding
Drilling
Thickness
Length
Through
Hub
NPS < & = 5" (125 mm)
NPS > & = 6" (150 mm)
Bolt Circle Diameter
Bolt Hole Spacing
Eccentricity of Bolt Circle & Facing
with respect to Bore :
NPS < & = 2.5" (65 mm)
NPS > & = 3" (8O mm)
NPS < & = 18" (450 mm)
NPS > & = 20" (500 mm)
NPS < & = 10" (250 mm)
NPS > & = 12" (300 mm)
3/32" (2.4 mm)
1/32" (0.8 mm)
5/32" (4 mm)
1/32" (0.8 mm)
1/16" (1.6 mm)
1/32" (0.8 mm)
1/32" (0.8 mm)
1/16" (1.6 mm)
1/8" (3.2 mm)
0
3/16" (4.8 mm)
0
1/16" (1.6 mm)
1/8" (3.2 mm)
±
+
-
+
-
±
+
-
+
-
±
±
±
±
+
-
+
-
± ±
± ±
±
±
+
-
+
-
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