DN = Nominal size, D = Outside Diameter, A = Outside Dia of Neck , B1 = Bore of Type 101 & 112 Flange, C1 = Thickness of Plate Flange,
C2 = Thickness of Weld_Neck and Boss Flange, N1 = Dia of Weld Neck, N2 = Dia of Boss,R = corner Radius, H1 = Length of Boss Flange,
H2 = Length of Weld Neck Flange, H3 = Length of Neck :
Note: The flanges shown are only a small part of the range covered in BS 4504.
The Facings shown are type B (Raised Face). Other Facings include:
Type A..Flat: Type C..Tongue: Type D..Groove Type E..Spigot: :Type F..Recess: Type G..O-ring Recess: Type H.,0-ring Groove:
NOTE all dimensions are in mm
DN
D
C1
C2
H1
H2
H3
R
A
N1
N2
B1
d1
f1
10
90
14
14
20
35
6
3
17,2
28
30
18
40
2
15
95
14
14
20
35
6
3
21,3
32
35
22
45
2
20
105
14
14
24
38
6
4
26,9
39
45
27,5
58
2
25
115
16
16
24
38
6
4
33,7
46
52
34,5
68
2
32
140
18
16
26
40
6
5
42,4
56
60
43,5
78
2
40
150
18
16
26
42
7
5
48,3
64
70
49,5
88
3
50
165
20
18
28
45
8
5
60,3
74
84
61,5
102
3
65
185
20
18
32
45
10
6
76,1
92
104
77,5
122
3
80
200
20
20
34
50
10
6
88,9
110
118
90,5
138
3
100
220
22
20
40
52
12
6
114,3
130
140
116
162
3
125
250
22
22
44
55
12
6
139,7
158
168
141,5
188
3
150
285
24
22
44
55
12
8
168,3
184
195
170,5
212
3
200
340
26
24
44
62
16
8
219,1
234
246
221,5
268
3
250
405
29
26
46
70
16
10
273
288
298
276,5
320
3
300
460
32
28
46
78
16
10
323,9
342
350
327,5
378
4
350
520
35
30
57
82
16
10
355,6
390
400
359
438
4
400
580
38
32
63
85
16
10
406,4
444
456
411,0
490
4
450
640
42
34
68
87
16
12
457,0
490
502
462,0
550
4
500
715
46
34
73
90
16
12
508,0
546
559
513,5
610
4
600
840
52
36
83
95
18
12
610,0
650
658
616,5
725
5
700
910
60
36
83
100
18
12
711,0
750
760
-
795
5
800
1025
68
38
90
105
20
12
813,0
848
864
-
900
5
900
1125
76
40
94
110
20
12
914,0
948
968
-
1000
5
1000
1255
84
42
100
120
22
12
1016,0
1056
1072
-
1115
5
1200
1485
98
48
-
130
30
12
1220,0
1260
-
-
1330
5
1400
1685
-
52
-
145
30
12
1420,0
1465
-
-
1530
5
1600
1930
-
58
-
160
35
12
1620,0
1668
-
-
1750
5
DN
D
C1
C2
H1
H2
H3
R
A
N1
N2
B1
d1
f1
FLANGE BOLTING
K = Bolt Circle Diameter, L = Dia Of Bolt Hole,
No = Number of Holes, Size = Size of Bolts
DN
K
L
No
Size
mm
mm
mm
-
mm
10
60
14
4
M12
15
65
14
4
M12
20
75
14
4
M12
25
85
14
4
M12
32
100
18
4
M16
40
110
18
4
M16
50
125
18
4
M16
65
145
18
8
M16
80
160
18
8
M16
100
180
18
8
M16
125
210
18
8
M16
150
240
22
8
M20
200
295
22
12
M20
250
355
26
12
M24
300
410
26
12
M24
350
470
26
16
M24
400
525
30
16
M27
450
585
30
20
M27
500
650
33
20
M30
600
770
36
20
M33
700
840
36
24
M33
800
950
39
24
M36
900
1050
39
28
M36
1000
1170
42
28
M39
1200
1390
48
32
M45
1400
1590
48
36
M45
1600
1820
56
40
M52
DN
K
L
No
Size
BS EN 1092-1 PN 25 Dimensions
DN = Nominal size, D = Outside Diameter, A = Outside Dia of Neck , B1 = Bore of Type 01 & 12 Flange, C1 = Thickness of Plate Flange,
C2 = Thickness of Weld_Neck and Boss Flange, N1 = Dia of Weld Neck, N2 = Dia of Boss,R = corner Radius, H1 = Length of Boss Flange,
H2 = Length of Weld Neck Flange, H3 = Length of Neck : S = neck thickness
Note: The flange types shown are only a small part of the range covered in BS EN 1092-1.
type 05 is a blank flange
type13 is a screwed boss flange
type 02 is a loose plate flange used with either
a type 32 weld on plate collar or
a type 33 lapped pipe end
a type 04 flange is a loose flange for use with a
type 34 a weld-neck collar
type 21 is an integral flange
The Facings shown are type B (Raised Face). Other Facings include:
Type A..Flat: Type C..Tongue: Type D..Groove Type E..Spigot: :Type F..Recess: Type G..O-ring Spigot: Type H.,0-ring Groove:
A typical designation for a flange would be BS EN 1092-1/01B/DN150/PN25/ */S235JR
Key: = Standard No/Flange Type & Face Type / Nominal Size/ Pressure Rating/*/ Material Designation.
* Normally not used. For 01 type flanges above 600 mm the bore B1 would be specified here . * for type 11 and 31 the neck thickness (S) is specified here.
An example designation for an flange for an 800mm pipe ... BS EN 1092-1/01B/DN800/PN25/818/S235JR
This is an extremely simplified note. To obtain a comprehensive description with the various variations the standards must be used.
Note : All Dimensions in mm
DN
D
C1
C2
H1
H2
H3
R
A
N1
N2
B1
d1
f1
S
10
90
14
14
20
35
6
4
17,2
28
30
18
40
2
1,8
15
95
14
14
20
35
6
4
21,3
32
35
22
45
2
2,0
20
105
14
14
24
38
6
4
26,9
39
45
27,5
58
2
2,3
25
115
16
16
24
38
6
4
33,7
46
52
34,5
68
2
2,6
32
140
18
16
26
40
6
6
42,4
56
60
43,5
78
2
2,6
40
150
18
16
26
42
7
6
48,3
64
70
49,5
88
2
2,6
50
165
20
20
34
48
8
6
60,3
75
84
61,5
102
2
2,9
65
185
22
22
38
52
10
6
76,1
90
104
77,5
122
2
2,9
80
200
24
24
40
58
12
8
88,9
105
118
90,5
138
2
3,2
100
235
26
24
44
65
12
8
114,3
134
145
116
162
2
3,6
125
270
28
26
48
68
12
10
139,7
162
170
141,5
188
2
4,2
150
300
30
28
52
75
12
10
168,3
192
200
170,5
218
2
4,5
200
360
32
30
52
80
16
10
219,1
244
256
221,5
278
2
6,3
250
425
35
32
60
88
18
12
273,0
298
310
276,5
335
2
7,1
300
485
38
34
67
92
18
12
323,9
352
364
327,5
395
2
8,0
350
555
42
38
72
100
20
12
355,6
398
418
359,5
450
2
8,0
400
620
46
40
78
110
20
12
406,4
452
472
411,0
505
2
8,8
450
670
50
46
84
110
20
12
457,0
500
520
462,0
555
2
8,8
500
730
56
48
90
125
20
12
508,0
558
580
513,5
615
2
10,0
600
845
68
58
100
125
20
12
610,0
660
684
616,5
720
2
11,0
700
960
-
46
-
125
20
12
711,0
760
-
-
820
2
12,5
800
1085
-
50
-
135
22
12
813,0
864
-
-
930
2
14,2
900
1185
-
54
-
145
24
12
914,0
968
-
-
1030
2
16,0
1000
1320
-
58
-
155
24
16
1016,0
1070
-
-
1140
2
17,5
1200
1530
-
-
-
-
-
18
1219,0
-
-
-
1350
2
-
1400
1755
-
-
-
-
-
18
1422,0
-
-
-
1560
2
-
1600
1975
-
-
-
-
-
20
1626,0
-
-
-
1780
2
-
DN
D
C1
C2
H1
H2
H3
R
A
N1
N2
B1
d1
f1
S
Note: in BS EN 1092-1:2002 f1= 2 for all sizes.
In the latest versions of the relevant DIN standard. f1 varies as follow
(DN =< 32 f1 = 1-2, DN 32->250(inc) f1= 1-3, DN 250->500(inc) f1= 1-4, Dn >500 f1= 1-5 )..
Flange Bolting
K = Bolt Circle Diameter, L = Dia Of Bolt Hole,
No = Number of Holes, Size = Size of Bolts
DN
K
L
No
Size
mm
mm
mm
-
mm
10
60
14
4
M12
15
65
14
4
M12
20
75
14
4
M12
25
85
14
4
M12
32
100
18
4
M16
40
110
18
4
M16
50
125
18
4
M16
65
145
18
8
M16
80
160
18
8
M16
100
190
22
8
M20
125
220
26
8
M24
150
250
26
8
M24
200
310
26
12
M24
250
370
30
12
M27
300
430
30
16
M27
350
490
33
16
M30
400
550
36
16
M33
450
600
36
20
M33
500
660
36
20
M33
600
770
39
20
M36
700
875
42
24
M39
800
990
48
24
M45
900
1090
48
28
M45
1000
1210
56
28
M52
1200
1420
56
32
M52
1400
1640
62
36
M56
1600
1860
62
40
M56
DN
K
L
No
Size
BS4504 PN 40 Dimensions
Note: Now obsolete and replaced by BS EN 1092-1 see flange index page
DN = Nominal size, D = Outside Diameter, A = Outside Dia of Neck , B1 = Bore of Type 101 & 112 Flange, C1 = Thickness of Plate Flange,
C2 = Thickness of Weld_Neck and Boss Flange, N1 = Dia of Weld Neck, N2 = Dia of Boss, R = corner Radius, H1 = Length of Boss Flange,
H2 = Length of Weld Neck Flange, H3 = Length of Neck :
Note: The flanges shown are only a small part of the range covered in BS 4504.
The Facings shown are type B (Raised Face). Other Facings include:
Type A..Flat: Type C..Tongue: Type D..Groove Type E..Spigot: :Type F..Recess: Type G..O-ring Recess: Type H.,0-ring Groove:
