Types of flanges (typ) up to DIN EN 1092-1
Typ 01: Plate (slip-on) flanges for welding
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Typ 13: Hubbed threaded flanges
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Typ 02: Loose plate flanges with weld-on plate collar
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Typ 21: Integral flanges
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Typ 04: Loose plate flanges with weld-neck collar
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Typ 32: Weld-on plate collars
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Typ 05: Blank (blind) flanges
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Typ 33: Lapped pipe ends
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Typ 11: Weld-neck flanges
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Typ 34: Weld-neck collars
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Typ 12: Hubbed slip-on flanges for welding
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D: Outside Diameter K: Diameter of Bolt Circle L: Diameter of Bolt Hole
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A: Outside Diameter of Neck E: Chamfer F: Collar thickness
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G max: Diameter of Shoulders R: Corner Radius N: Neck Diameter S: Neck Thickness (Preferred value)
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N
|
Mating dimensions
|
A
|
Bore Diameter
|
Flange Thickness
|
E
|
F
|
G max
|
Length
|
Neck Diameters
|
R
|
S
|
D
|
K
|
L
|
Bolting
|
No
|
Size
|
B1
|
B2
|
B3
|
C1
|
C2
|
C3
|
C4
|
H1
|
H2
|
H3
|
N1
|
N2
|
N3
|
Flange type
|
01, 05, 11, 12, 21
|
11 21*
|
01 12
|
-
|
-
|
01
|
11 12 13
|
21
|
05
|
-
|
-
|
05
|
12 13
|
11
|
11
|
11
|
12 13
|
21
|
11 12 13 21
|
11
|
10
|
100
|
70
|
14
|
4
|
M12
|
17.2
|
18
|
-
|
-
|
20
|
20
|
20
|
20
|
-
|
-
|
-
|
28
|
45
|
6
|
32
|
40
|
40
|
4
|
1.8
|
15
|
105
|
75
|
14
|
4
|
M12
|
21.3
|
22
|
-
|
-
|
20
|
20
|
20
|
20
|
-
|
-
|
-
|
28
|
45
|
6
|
34
|
43
|
45
|
4
|
2
|
20
|
130
|
90
|
18
|
4
|
M16
|
26.9
|
27.5
|
-
|
-
|
22
|
22
|
22
|
22
|
-
|
-
|
-
|
30
|
48
|
8
|
42
|
52
|
50
|
4
|
2.6
|
25
|
140
|
100
|
18
|
4
|
M16
|
33.7
|
34.5
|
-
|
-
|
24
|
24
|
24
|
24
|
-
|
-
|
-
|
32
|
58
|
8
|
52
|
60
|
61
|
4
|
2.6
|
32
|
155
|
110
|
22
|
4
|
M20
|
42.4
|
43.5
|
-
|
-
|
24
|
24
|
26
|
24
|
-
|
-
|
-
|
32
|
60
|
8
|
62
|
68
|
68
|
6
|
2.9
|
40
|
170
|
125
|
22
|
4
|
M20
|
48.3
|
49.5
|
-
|
-
|
26
|
26
|
28
|
26
|
-
|
-
|
-
|
34
|
62
|
10
|
70
|
80
|
82
|
6
|
2.9
|
50
|
195
|
145
|
26
|
4
|
M24
|
60.3
|
61.3
|
-
|
-
|
28
|
28
|
30
|
28
|
-
|
-
|
-
|
36
|
68
|
10
|
90
|
95
|
96
|
6
|
3.2
|
65
|
220
|
170
|
26
|
8
|
M24
|
76.1
|
77.5
|
-
|
-
|
30
|
30
|
34
|
30
|
-
|
-
|
45
|
40
|
76
|
12
|
108
|
118
|
118
|
6
|
3.6
|
80
|
230
|
180
|
26
|
8
|
M24
|
88.9
|
90.5
|
-
|
-
|
34
|
32
|
36
|
32
|
-
|
-
|
60
|
44
|
78
|
12
|
120
|
130
|
128
|
8
|
4
|
100
|
265
|
210
|
30
|
8
|
M27
|
114.3
|
116
|
-
|
-
|
36
|
36
|
40
|
36
|
-
|
-
|
80
|
52
|
90
|
12
|
150
|
158
|
150
|
8
|
5
|
125
|
315
|
250
|
33
|
8
|
M30
|
139.7
|
141.5
|
-
|
-
|
42
|
40
|
40
|
40
|
-
|
-
|
105
|
56
|
105
|
12
|
180
|
188
|
185
|
8
|
6.3
|
150
|
355
|
290
|
33
|
12
|
M30
|
168.3
|
170.5
|
-
|
-
|
48
|
44
|
44
|
44
|
-
|
-
|
130
|
60
|
115
|
12
|
210
|
225
|
216
|
10
|
7.1
|
200
|
430
|
360
|
36
|
12
|
M33
|
219.1
|
221.5
|
-
|
-
|
60
|
52
|
52
|
52
|
-
|
-
|
180
|
-
|
130
|
16
|
278
|
-
|
278
|
10
|
10
|
250
|
505
|
430
|
39
|
12
|
M36
|
273
|
276.5
|
-
|
-
|
72
|
60
|
60
|
60
|
-
|
-
|
210
|
-
|
157
|
18
|
340
|
-
|
340
|
12
|
12.5
|
300
|
585
|
500
|
42
|
16
|
M39
|
323.9
|
327.5
|
-
|
-
|
84
|
68
|
68
|
68
|
-
|
-
|
260
|
-
|
170
|
18
|
400
|
-
|
407
|
12
|
14.2
|
350
|
655
|
560
|
48
|
16
|
M45
|
355.6
|
359.5
|
-
|
-
|
95
|
74
|
74
|
74
|
-
|
-
|
300
|
-
|
189
|
20
|
460
|
-
|
460
|
12
|
16
|
400
|
715
|
620
|
48
|
16
|
M45
|
406.4
|
411
|
-
|
-
|
406
|
-
|
78
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
518
| |
-
|
500
|
870
|
760
|
56
|
20
|
M52
|
508
|
543.5
|
-
|
-
|
128
|
-
|
94
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
630
| |
-
|
* For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.
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