1)Flange Specification (DIN Standard PN16 DIN2501)
|
Pipe Size (mm)
|
20
|
250
|
300
|
350
|
400
|
450
|
500
|
600
|
|
Flange (O.D.)
|
340
|
405
|
460
|
520
|
580
|
640
|
715
|
840
|
|
Bolt Circle (P.C.D.)
|
295
|
355
|
410
|
470
|
525
|
585
|
650
|
770
|
|
No. of Bolt Circle
|
12
|
12
|
16
|
16
|
20
|
20
|
20
|
20
|
|
Hole Diameter
|
22
|
26
|
26
|
26
|
30
|
30
|
33
|
36
|
|
Note: Dimension of PN16 (6” and below), please refer to PN10.
|
2)Flange Specification (DIN Standard PN10 DIN2501)
|
(DN)Pipe Size (inch)
|
Flange (O.D.)
|
Bolt Circle (P.C.D.)
|
No. of Bolt Circle
|
Hole Diameter
|
|
1
|
4.53
|
3.35
|
4
|
0.55
|
|
1 1/4
|
5.51
|
3.94
|
4
|
0.71
|
|
1 1/2
|
5.91
|
4.33
|
4
|
0.71
|
|
2
|
6.5
|
4.92
|
4
|
0.71
|
|
2 1/2
|
7.28
|
5.71
|
4
|
0.71
|
|
3
|
7.87
|
6.3
|
8
|
0.71
|
|
4
|
8.66
|
7.09
|
8
|
0.71
|
|
5
|
9.84
|
8.27
|
8
|
0.71
|
|
6
|
11.22
|
9.45
|
8
|
0.87
|
|
8
|
13.39
|
11.61
|
8
|
0.87
|
|
10
|
15.55
|
13.79
|
12
|
0.87
|
|
12
|
17.52
|
15.75
|
12
|
0.87
|
|
14
|
19.88
|
18.11
|
16
|
0.87
|
|
16
|
22.24
|
20.28
|
16
|
1.02
|
|
18
|
24.21
|
22.24
|
20
|
1.02
|
|
20
|
26.38
|
24.41
|
20
|
1.02
|
|
24
|
30.71
|
28.54
|
20
|
1.18
|