|
STEEL
FLANGES
JIS
B2220 20K
| Nominal
Diameter of Flange |
Outside
Diameter of steel Pipe |
Inside
Diameter of Flange do |
Outside
Diameter of Flange D |
Sectional
Dimensions of Flange |
Bolt
Hole |
|
Reference |
Approx.
Weight (kg) |
| t |
T |
Diameter
of Hub |
Radius
r |
f |
g |
d |
Bolt
Circle Diameter C |
Number
of Bolt Holes |
Hole
Diameter h |
Nominal
Bolt Size |
S1 |
m |
S2 |
n |
l |
| a |
b |
| 10
15
20
|
17.3
21.7
27.2
|
17.8
22.2
27.7
|
90
95
100
|
14
14
16
|
20
20
22
|
30
34
40
|
32
36
42
|
10
4
4
|
1
1
1
|
46
51
56
|
-
-
-
|
65
70
75
|
4
4
4
|
15
15
15
|
M12
M12
M12
|
27
31
37
|
4
4
4
|
27
31
37
|
4
4
4
|
-
-
-
|
0.59
0.65
0.81
|
| 25
32
40
|
34.0
42.7
48.6
|
34.5
43.2
49.1
|
125
135
140
|
16
18
18
|
24
26
26
|
48
56
62
|
50
60
66
|
4
5
5
|
1
2
2
|
67
76
81
|
-
-
-
|
90
100
105
|
4
4
4
|
19
19
19
|
M16
M16
M16
|
44
52
58
|
4
4
4
|
44
52
58
|
4.5
5
5.5
|
-
-
-
|
1.29
1.60
1.69
|
| 50
65
80
|
60.5
76.3
89.1
|
61.1
77.1
90.0
|
155
175
200
|
18
20
20
|
26
30
34
|
76
100
113
|
80
104
117
|
5
5
6
|
2
2
2
|
96
116
132
|
-
65.9
78.1
|
120
140
160
|
8
8
8
|
19
19
23
|
M16
M16
M20
|
70
94
107
|
4
6
6
|
72
85
-
|
5.5
6
-
|
-
6
6
|
1.89
2.60
3.93
|
| (90)
100
125
|
101.6
114.3
139.8
|
102.6
115.4
141.2
|
210
225
270
|
24
24
26
|
36
36
40
|
126
138
166
|
130
142
172
|
6
6
6
|
2
2
2
|
145
160
195
|
90.2
102.3
126.6
|
170
185
225
|
8
8
8
|
23
23
25
|
M20
M20
M22
|
120
132
160
|
6
6
7
|
-
-
-
|
-
-
-
|
6
6
6
|
4.56
5.13
8.30
|
| 150
200
250
|
165.2
216.3
267.4
|
166.6
218.0
269.5
|
305
350
430
|
28
30
34
|
42
46
52
|
196
244
304
|
202
252
312
|
6
6
6
|
2
2
2
|
230
175
345
|
151.0
199.9
248.8
|
260
305
380
|
12
12
12
|
25
25
27
|
M22
M22
M24
|
186
237
290
|
8
9
10
|
-
-
-
|
-
-
-
|
6
6
6
|
10.6
13.3
23.4
|
| 300
350
400
|
318.5
355.6
4.6.4
|
321.0
358.1
409.0
|
480
540
605
|
36
40
46
|
56
62
70
|
354
398
446
|
364
408
456
|
8
8
10
|
3
3
3
|
395
440
495
|
297.9
333.4
381.0
|
430
480
540
|
16
16
16
|
27
33
33
|
M24
M30*3
M30*3
|
345
384
437
|
11
12
13
|
-
-
-
|
-
-
-
|
6
6
78
|
27.7
39.2
54.2
|
| 450
500
(550)
|
457.2
508.0
558.8
|
460.0
511.0
562.0
|
675
730
795
|
48
50
52
|
78
84
90
|
504
558
612
|
514
558
612
|
10
10
10
|
3
3
3
|
560
615
670
|
431.8
482.6
533.4
|
605
660
720
|
20
20
20
|
33
33
39
|
M30*3
M30*3
M30*3
|
490
544
595
|
15
16
16
|
-
-
-
|
-
-
-
|
7
7
7
|
71.7
86.2
105
|
| 600 |
609.6 |
613 |
845 |
54 |
96 |
666 |
676 |
10 |
3 |
720 |
584.2 |
770 |
24 |
39 |
M36*3 |
646 |
18 |
- |
- |
7 |
119 |
REMARKS.
1. Flanges of parenthesized
nominal diameters had better not be used.
2. The falnge gasket surface is based on large
raised facing specified in JIs b2202.
3. The dimensinal tolerance shall , refer to JIs B2203.
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