Wenzhou Kidy Pipeline Materials Co., Ltd.
Wenzhou Kidy Pipeline Materials Co., Ltd.
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JIS B2220 Steel Pipe Flanges

JIS B2220 Steel Pipe Flanges

JIS B2220 Steel pipe flanges adopt forging processing technology, specifications: 15A-1500A, pressure rating: 5K-63K; Suitable for liquid, particle, and gas transportation pipelines, such as chemical, refining, boilers, electricity, food, and other fields.

Specifications1 of JIS B2220 Steel Pipe Flanges

Table 5 Materials
Classification
of material
Rolled steelsSteel forgingsSteel castingsMaterial
group No.
Standard
number
Symbol of
material
Standard
number
Symbol of
material
Standard
number
Symbol of
material
Carbon steelJIS G 3101
JIS G 4051

SS 400 a)

S 20 C b)

JIS G 3201
JIS G 3202
JIS G 4051

SF 390A a)

SFVC1

S20CM b)
JIS G 5101
JIS G 5151
SC 410
SCPH 1
001
JIS G 4051S25C b)JIS G 3201
JIS G 4051

SF 440A a)

S25C b)

JIS G 5101SC 480002
JIS G 3202SPVC 2AJIS G 5151SCPH 2003a
Low alloy
steel
JIS G 3203SFVAFIJIS G 5151SCPH 11013a
JIS G 3203SPVA F11AJIS G 5151SCPH 21015a
Stainless
steel
JIS G 4304
JIS G 4305
SUS 304
SUS 304
JIS G 3214SUS F304JIS G 5121SCS 13A021a
JIS G 5121SCS 19A021b
JIS G 4304
JIS G 4305
SUS 316
SUS 316
JIS G 3214SUS F316JIS G 5121SCS 14A022a
JIS G 5121SCS 16A022b
JIS G 4304
JIS G 4305
SUS 304L
SUS 304L
JIS G 3214SUS F304L023a
JIS G 4304
JIS G 4305
SUS 316L
SUS 316L
JIS G 3214SUS F316L023b
Notes: a) SS 400 of JIS G 3101 and SF 390A and SF 440A of JIS G 3201 shall be those with a maximum carbon con
tent of 0.35%.
b)The inspection of S 20 C and S 25 C of JIS G 4051 shall be conducted according to JIS G 0404, and the ten
sale strength of S 20 C shall be 400 N/mm or over and that of S 25 C,440 N/mm2 or over.


Specifications2 of JIS B2220 Steel Pipe Flanges

Table 6 ASTM materials (informative)
Classification
of material
Rolled steelsSteel forgingsSteel castingsMaterial
group No.
Standard
number
Symbol of
material
Standard
number
Symbol of
material
Standard
number
Symbol of
material
Carbon steelA515
A516
A537
70
70
CL1
A105
A350

LF2
A216WCB1.1
Low alloy
steel
A204
A204
A
B
A182F1A217
A352
WC1
LC1
1.5
A38711 CL2A182
A182
F11 CL2
F12 CL2
A217WC61.9
Stainless
steel
A240
A240
304
304H
A182
A182
F304
F304H
A351
A351
CF3
CF8
2.1
A240
A240
A240
316
316H
317
A182
A182
F316
F316H
A351
A351
A351
CF3M
CF8M
CG8M
2.2
A 240
A240
304L
316L
A 182
A 182
F304L
F316L
2.3
NOTE: For standards shown in this table, see Annex G.


Specifications3 of JIS B2220 Steel Pipe Flanges

JIS B2220 Steel Pipe Flanges Manufacturer

Nominal
size
A
Joined dimensionInside diameterDepth
of
socket
S
Nominal
designa-
tion of
thread
Raised face
Outside
diameter
of flange
D
Diameter
of bolt
hole
centre
circle
C
Diameter
of bolt
hole
h
Num
ber
of bolts
Nominal
designa-
tion of
thread of
bolt
d0d0da)Infor-
mative)
d
Diam-
eter
g
Hei-
ght
f
SOP, SOH, SW, LJ, TR, WN, IT, BLSOP
SOH.
SW
LJSW.
WN
ITSWTRWN, IT
10
15
20
75
80
85
55
60
65
12
12
12
4
4
4
MI0
M10
M10
17.8
22.2
27.7
-
23.4
28.9
12.7
16.1
21.6
10
15
20
10
10
13
RC 3/8
RC 1/2
RC 3/4
39
44
49
1
1
1
25
32
40
95
115
120
75
90
95
12
15
15
4
4
4
M10
M12
M12
34.5
43.2
49.1
35.6
44.3
50.4
27.6
35.7
41.6
25
32
40
13
13
13
RC 1
RC 1, 1/4
RC 1, 1/2
59
70
75
1
2
2
50
65
80
130
155
180
105
130
145
15
15
19
4
4
4
M12
M12
M16
61.1
77.1
90.0
62.7
78.7
91.6
52.9
67.9
80.7
50
65
80
16
16
16
RC2
RC 2, 1/2
RC 3
85
110
121
2
2
2
90
100
125
190
200
235
155
165
200
19
19
19
4
8
8
M16
M16
M16
102.6
115.4
141.2
104.1
116.9
143.0
93.2
105.3
130.8
90
100
125



RC 4
RC 5
131
141
176
2
2
2
150
175
200
265
300
320
230
260
280
19
23
23
8
8
8
M16
M20
M20
166.6
192.1
218.0
168.4
-
219.5
155.2
180.1
204.7
150
175
200


RC6

206
232
252
2
2
2
225
250
300
345
385
430
305
345
390
23
23
23
12
12
12
M20
M20
M20
243.7
269.5
321.0
-
271.7
322.8
229.4
254.2
304.7
225
250
300




277
317
360
2
2
3
350
400
450
480
540
605
435
495
555
25
25
25
12
16
16
M22
M22
M22
358.1
409
460
360.2
411.2
462.3
339.8
390.6
441.4
340
400
450




403
463
523
3
3
3
500
550
600
655
720
770
605
665
715
25
27
27
20
20
20
M22
M24
M24
511
562
613
514.4
565.2
616.0
492.2
543.0
593.8
500
550
600




573
630
680
3
3
3
650
700
750
825
875
945
770
820
880
27
27
33
24
24
24
M24
M24
M30
664
715
766


644.6
695.4
746.2
650
700
750




735
785
840
3
3
3
800
850
900
995
1045
1095
930
980
1030
33
33
33
24
24
24
M30
M30
M30
817
868
919


797.0
847.8
898.6
800
850
900




890
940
990
3
3
3
1000
1100
1200
1195
1305
1420
1130
1240
1350
33
33
33
28
28
32
M30
M30
M30
1021
1122
1224


1000.2
1098.6
1200.2
1000
1200




1090
1200
1305
3
3
3
1350
1500
1575
1730
1505
1660
33
33
32
36
M30
M30
1376
1529

1346.2
1498.6
1350
1500


1460
1615
3
3
Note a) Adjustments shall be made according to the inside diameter of the steel pipes to be joined with.


Specifications4 of JIS B2220 Steel Pipe Flanges

JIS B2220 Steel Pipe Flanges Supplier

Nominal
size
A
Thickness
of flange
Diameter of
hub
Small
diameter side
Diameter of
hub
Large
diameter side
Taper of
hub
Total length
of flange
Cham-
fering c)
C
Radius of
fillet
Alternative
dimensions of
WN d)
Thick
ness
of
flange
t
Taper
of
hub

x
ttaabb b)xMin
x
TTrr b)
Exce
pt for
BL
BLSOH.
SW.
LJ.
TR
WNSOH,

SW,

LJ,

TR
WN
IT
WNITSOH,
SW,
LJ.
TR
WNLJSOH,
SW,
LJ,
TR
WN,
IT
WN
10
15
20
9
9
10
9
9
10
23
27
33
17.3
21.7
27.2
26
30
36
26
31
38
1.25
1.25
1.25
1.25
1.25
1.25
13
13
15
24
25
28

3
3
4
4
4
4
4
4




25
32
40
10
12
12
10
12
12
41
50
56
34.0
42.7
48.6
44
53
60
46
55
62
1.25
1.25
1.25
1.25
1.25
1.25
17
19
20
30
33
34
3
4
4
4
4
4
4
4
4




50
65
80
14
14
14
14
14
14
69
86
99
60.5
76.3
89.1
73
91
105
73
91
105
1.25
1.25
1.25
1.25
1.25
1.25
24
27
30
36
39
41
4
5
5
4
4
4
4
4
4




90
100
125
14
16
16
14
16
16

127
154
101.6
114.3
139.8

130
161
117
128
156
1.25
1.25
1.25
1.25
1.25
1.25

36
40
41
41
43
5
5
6

4
4
4
4
4




150
175
200
18
18
20
18
18
20
182

165.2
190.7
216.3
189

184
209
235
1.25
1.25
1.25
1.25
1.25
1.25
40

49
49
53
6

6
4

4
4
4




225
250
300
20
22
22
20
22
22


241.8
267.4
318.5


261
290
342
1.25
1.25
1.25
1.25
1.25
1.25


54
61
62

6
9


4
4
4




350
400
450
24
24
24
24
24
24


495
355.6
406.4
457.2


500
385
438
491
1.25
1.25
1.25
1.25
1.25
1.25


40
73
76
79
9
9
9


5
4
4
5




500
550
600
24
26
26
24
26
26
546
597
648
508.0
558.8
609.6
552
603
654
541
593
643
1.25
1.25
1.25
1.25
1.25
1.25
40
42
44
79
81
81
9
9
9
5
5
5
5
5
5




650
700
750
26
26
28
28
30
32
702
751
802
660.4
711.2
762.0
708
758
810
698
748
802
1.25
1.5
1.5
1.25
1.5
1.5
48
48
52
85
94
100


5
5
5
5
5
5

36
38

1.25
1.25
800
850
900
28
28
30
34
36
36
854
904
956
812.8
863.6
914.4
862
912
964
852
902
952
1.5
1.75
1.75
1.5
1.75
1.75
52
5-4
56
100
108
108


5
5
5
5
5
5
38
38
40
1.25
1.5
1.5
1000
1100
1200
32
32
34
40
44
48
1058
1158
1260
1016.0
1117.6
1219.2
1066
1170
1272
1052
1162
1272
2
2
2
2
2
2
60
71
77
116
136
155


5
7
7
5
8
8
50
56
62
1.5
1.5
1.5
1350
1 500
34
36
54
58
1414
1568
1371.6
1524.0
1426
1580
1427
1582
2
2
2
2
80
86
164
172

7
7
8
10
62
66
1.5
1.5
Notes b)For If flanges the values shown for this dimension are informative.
c)This may be rounded off with the dimension cas a radius.
d)These dimensions may be applied upon agreement between the interested parties


Specifications5 of JIS B2220 Steel Pipe Flanges

JIS B2220 Steel Pipe Flanges Factory

Nominal
size
A
Joined dimension
Inside diameterDepth
of
socket
S
Nominal
designa-
tion of
thread
Raised face
Outside
diameter
of flange
D
Diameter
of bolt
hole
centre
circle
C
Diam-
eter
of bolt
hole
h
Num
ber
of bolts
Nominal
designa-
tion of
thread
of
bolt
d0d0da)(Infor-
mative)
d
Diam-
eter
g
Hei-
ght
f
SOP, SOH, SW, LJ, TR, WN, IT, BLSOP.
SOH.
SW

SW.
WN
ITSWTRWN.IT
10
15
20
90
95
100
65
70
75
15
15
15
4
4
4
M12
M12
M12
17.8
22.2
27.7

23.4
28.9
12.7
16.1
21.6
10
15
20
10
10
13
Rc 3/8
Rc 1/2
Rc 3/4
46
51
56
1
1
1
25
32
40
125
135
140
90
100
105
19
19
19
4
4
4
M16
M16
M16
34.5
43.2
49.1
35.6
44.3
50.4
27.6
35.7
41.6
25
32
40
13
13
13
Rc1
Rc 1, 1/4
Rc 1, 1/2
67
76
81
1
2
2
50
65
80
155
175
185
120
140
150
19
19
19
4
4
8
M16
M16
M16
61.1
77.1
90.0
62.7
78.7
91.6
52.9
67.9
80.7
50
65
80
16
16
16
Rc 2
Rc 2, 1/2
Rc 3
96
116
126
2
2
2
90
100
125
195
210
250
160
175
210
19
19
23
8
8
8
M16
M16
M20
102.6
115.4
141.2
104.1
116.9
143.0
93.2
105.3
130.8
90
100
125



Rc 4
Rc 5
136
151
182
2
2
2
150
175
200
280
305
330
240
265
290
23
23
23
8
12
12
M20
M20
M20
166.6
192.1
218.0
168.4

219.5
155.2
180.1
204.7
150
175
200


Rc6

212
237
262
2
9
2
225
250
300
350
400
445
310
355
400
23
25
25
12
12
16
M20
M22
M22
243.7
269.5
321.0

271.7
322.8
229.4
254.2
304.7
225
250
300




282
324
368
2
2
3
350
400
450
490
560
620
445
510
565
25
27
27
16
16
20
M22
M24
M24
358.1
409
460
360.2
411.2
462.3
339.8
390.6
441.4
340
400
450




413
475
530
3
3
3
500
550
600
675
745
795
620
680
730
27
33
33
20
20
24
M24
M30
M30
511
562
613
514.4
565.2
616.0
492.2
543.0
593.8
500
550
600




585
640
690
3
3
3
650
700
750
845
905
970
780
840
900
33
33
33
24
24
24
M30
M30
M30
664
715
766


644.6
695.4
746.2
650
700
750




740
800
855
3
3
3
800
850
900
1020
1070
1120
950
1000
1050
33
33
33
28
28
28
M30
M30
M30
817
868
919


797.0
847.8
898.6
800
850
900




905
955
1005
3
3
3
1000
1100
1200
1235
1345
1 465
1160
1270
1380
39
39
39
28
28
32
M36
M36
M36
1021
1122
1224


1000.2
1098.6
1200.2
1000
1100
1200




1110
1220
1325
3
3
3
1350
1500
1630
1795
1540
1700
45
45
36
40
M42
M42

1376

1529


1346.2
1498.6
1350
1500


1480
1635
3
3
Note a) Adjustment shall be made according to the inside diameter of the steel pipes to be joined with.


Specifications6 of JIS B2220 Steel Pipe Flanges

JIS B2220 Steel Pipe Flanges Company

Nominal
size
A
Thickness
of flange
Diameter of
hub
Small
diameter side
Diameter of
hub
Large
diameter side
Taper of
hub
Total length
of flange
Cham-
fering c)
c
Radius of
fillet
Alternative
dimensions of
WN d)
Thick-
ness
of
flange
t
Taper
of
hub
x
ttaabb b)xMin.
x
TTrr b)
Exce-
pt for
BL
BLSOH,
SW.
LJ.
TR
WNSOH.
SW, LJ.
TR
WN,
IT
WNITSOH
SW.
LJ
TR
WNLJSOH
SW.
LJ
TR
WN, ITWN
10
15
20
12
12
14
12
12
14
23
27
33
17.3
21.7
27.2
26
30
36
28
33
38
1.25
1.25
1.25
1.25
1.25
1.25
16
16
20
29
31
32

3
3
4
4
4
4
4
4




25
32
40
14
16
16
14
16
16
41
50
56
34.0
42.7
48.6
44
53
60
47
56
62
1.25
1.25
1.25
1.25
1.25
1.25
20
22
24
36
38
38
3
4
4
4
4
4
4
4
4




50
65
80
16
18
18
16
18
18
69
86
99
60.5
76.3
89.1
73
91
105
75
92
105
1.25
1.25
1.25
1.25
1.25
1.25
24
27
30
40
44
45
4
5
5
4
4
4
4
4
5




90
100
125
18
18
20
18
18
20

127
154
101.6
114.3
139.8

130
161
117
130
156
1.25
1.25
1.25
1.25
1.25
1.25

36
40
45
45
47
5
5
6

4
4
5
5
5




150
175
200
22
22
22
22
22
22
182

165.2
190.7
216.3
189

184
210
238
1.25
1.25
1.25
1.25
1.25
1.25
40

53
55
58
6

6
4

5
5
5




225
250
300
22
24
24
22
24
24

288
340
241.8
267.4
318.5

292
346
261
292
345
1.25
1.25
1.25
1.25
1.25
1.25

36
38
58
65
68

6
9

6
6
5
6
6




350
400
450
26
28
30
26
28
30
380
436
496
355.6
406.4
457.2
386
442
502
388
442
495
1.25
1.25
1.25
1.25
1.25
1.25
42
44
48
79
85
90
9
9
9
6
6
6
6
6
6




500
550
600
30
32
32
30
34
36
548
604
656
508.0
558.8
609.6
554
610
662
546
597
648
1.5
1.75
1.75
1.5
1.75
1.75
48
52
52
99
111
112
9
9
9
6
6
6
6
6
6
40

42

42

1.25
1.5
1.5
650
700
750
34
34
36
38
40
44
706
762
816
660.4
711.2
762.0
712
770
824
700
754
807
1.75
2
2
1.75
2
2
56
58
62
116
132
139


6
6
6
6
6
6

44

56

60

1.5
1.5
1.5
800
850
900
36
36
38
46
48
50
868
920
971
812.8
863.6
914.4
876
928
979
858
908
959
2
2
2
2
2
2
64
66
70
139
139
140


6
6
6
6
6
6
60
60
62
1.5
1.5
1.5
1000
1100
1200
40
42
44
56
62
66
1073
1175
1278
1016.0
1117.6
1219.2
1081
1185
1290
1065
1174
1281
2
2
2
2
2
2
74
95
101
151
170
182


6
8
8
6
10
10
66
72
76
1.5
1.5
1.5
1350
1500
48
50
74
82
1432
1585
1371.6
1524.0
1450
1605
1438
1598
2
2
2
2
110
123
200
218

8
8
10
12
82
88
1.5
1.5
Notes b) For IT fanges, the values shown for this dimension are informative.
c) This may be rounded off with the dimension cas a radius.
d) These dimensions may be applied upon agreement between the interested parties.


Features of JIS B2220 Steel pipe Flanges

KIDY is a service-oriented enterprise with a complete range of steel grades; Regular steel grades SUS304, SUS316L material, and other specifications are available for long-term delivery of flange blanks. The packaging is made in export wooden boxes, and special size requirements can be customized.

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