Flanges DIN Standard
 

DIN 2527 PN 10
Size
Outside Diameter
of Flanges
Thickness of
Flanges
Diameter of
Bolt Circle
Hole
Dia
No.of
Holes
Bolt Size
DN-ND
D
b
a
c
n
M12
10
90
14
60
14
4
M12
15
95
14
65
14
4
M12
20
105
16
75
14
4
M12
25
115
16
85
14
4
M12
32
140
16
100
18
4
M16
40
150
16
110
18
4
M16
50
165
18
125
18
4
M16
65
185
18
145
18
4
M16
80
200
20
160
18
8
M16
100
220
20
160
18
8
M16
125
250
22
210
18
8
M16
150
285
22
240
22
8
M20
200
240
24
295
22
8
M20
250
395
26
350
22
12
M20
300
445
26
350
22
12
M20
350
505
26
460
22
16
M20
400
565
26
515
26
16
M24
500
670
28
620
26
20
M24

DIN 2576 PN 10
Size
Outside
Diameter of
Flanges
Pipe d1
Inside Dia of
Flanges
d5
Thickness
of Flanges
Dia of
Bolt
Circle
Hole
Dia
No. of
Holes
Bolt Size
DN-ND
D
Dia
ISO
Dia
NB
Dia ISO
Dia
NB
b
a
c
n
 
10
90
17,2
14.0
17.7
14.5
14
60
14
4
M12
15
95
21,3
20.0
22.0
21.0
14
65
14
4
M12
20
105
26,9
25.0
27,6
26.0
16
75
14
4
M12
25
115
33,7
30.0
34,4
31.0
16
85
14
4
M12
32
140
42,4
38.0
43.1
39.0
16
100
18
4
M16
40
150
48,3
44.5
49.0
45.5
16
110
18
4
M16
50
165
60,3
57.0
61.1
58.1
18
125
18
4
M16
65
185
76,1
-
77.1
-
18
145
18
4
M16
80
200
88,9
-
90.3
-
20
160
18
8
M16
100
220
114,3
10.8.0
115.9
109.6
20
180
18
8
M16
125
250
139,7
133.0
115.9
109.6
20
180
18
8
M16
150
285
168,3
159.0
170.5
161.1
22
240
22
8
M20
200
340
219,1
-
221,8
-
24
295
22
8
M20
250
395
273.0
267.0
276.2
270.2
26
350
22
12
M20
300
445
323,9
368.0
359.7
372.2
28
460
22
16
M20
350
505
355,6
368.0
359.7
372.2
28
460
22
16
M20
400
565
406,4
419.0
411.0
423.7
32
515
26
16
M24
500
670
508,0
-
513.6
-
38
620
26
20
M24

DIN 2633 PN 16
Size
Outside
Diameter
of
Flanges
Pipe d1
Thickness
of Flanges
Dia
of
Bolt
Circle
Raise
Face
Dia
Raise
Face
Thick
ness
Hole
Dia
Total
Height
Straight
Height
of
Neck
Thickness
of
Neck
No.
of
Holes
Bolt
Size
DN-ND
D
Dia
ISO
Dia
NB
b
a
c
f
h
h
s
h1
s
n
10
90
17.2
14.0
14
60
40
2
14
35
6
1.8
4
M12
15
95
21.3
20.0
14
65
45
2
14
35
6
2.0
4
M12
20
105
26.9
25.0
16
75
58
2
14
38
6
2.3
4
M12
25
115
33.7
30.0
16
85
68
2
14
38
6
2.6
4
M12
32
140
42.4
38.0
16
100
78
2
18
40
6
2.6
4
M16
40
150
48.3
44.5
16
110
88
3
18
42
7
2.6
4
M16
50
165
60.3
57.0
18
125
102
3
18
45
8
2.9
4
M16
65
185
76.1
-
18
145
122
3
18
45
10
2.9
4
M16
80
200
88.9
-
20
160
138
3
18
45
10
2.9
4
M16
100
220
114.3
108.0
20
180
158
3
18
52
12
3.6
8
M16
125
250
139.7
133.0
22
210
188
3
18
55
12
4.0
8
M16
150
285
168.3
159.0
22
240
212
3
22
55
12
4.5
8
M20
200
340
219.1
-
24
295
268
3
22
62
16
5.9
12
M20
250
405
273.0
267.0
26
355
320
3
26
70
16
6.3
12
M24
300
460
323.9
-
28
410
378
4
26
78
16
7.1
12
M24
350
520
355.6
368.0
30
470
438
4
26
82
16
8.0
16
M24
400
580
406.4
419.0
32
525
490
4
30
85
16
8.0
16
M27
500
715
508.0
-
34
650
610
4
33
90
16
8.0
20
M30