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According to ISO 2531


DN
PN10
PN16
PN25
PLANE
THICKNESS
SCREWS
PLANE
THICKNESS
SCREWS
PLANE
THICKNESS
SCREWS
A
B
C
F
O
num
M
A
B
C
F
O
num
M
A
B
C
F
O
num
M
40
150
110
19
19
22
4
16
150
110
19
19
22
4
16
150
110
19
19
22
4
16
50
165
125
19
19
22
4
16
165
125
19
19
22
4
16
165
125
19
19
22
4
16
60
175
135
19
19
22
4
16
175
135
19
19
22
4
16
175
135
19
19
22
8
16
65
185
145
19
19
22
4
16
185
145
19
19
22
4
16
185
145
19
19
22
8
16
80
200
160
19
19
22
4
16
200
160
19
19
22
8
16
200
160
19
19
22
8
16
100
220
180
19
19
23
8
16
220
180
19
19
23
8
16
235
190
23
19
23
8
20
125
250
210
19
19
24.5
8
16
250
210
19
19
24.5
8
16
270
220
28
19
24.5
8
24
150
285
240
23
19
26
8
20
285
240
23
19
26
8
20
300
250
28
20
26
8
24
200
340
295
23
20
29
8
20
340
295
23
20
29
12
20
360
310
28
22
29
12
24
250
395*
350
23
22
32
12
20
405*
355
28
22
32
12
24
425
370
31
24.5
32
12
27
300
445*
400
23
24.5
36
12
20
460*
410
28
24.5
36
12
24
485
430
31
27.5
36
16
27
350
505
460
23
26.5
39
16
20
520
470
28
26.5
39
16
24
555
490
34
30
39
16
30
400
565
515
28
28
42
16
24
580
525
31
28
42
16
27
620
550
37
32
42
16
33
450
615
565
28
30
45
20
24
640
585
31
30
45
20
27
670
600
37
34.5
45
20
33
500
670
620
28
31.5
48
20
24
715
650
34
31.5
48
20
30
730
660
37
36.5
48
20
33
600
780
725
31
36
55
20
27
840
770
37
36
55
20
33
845
770
41
42
55
20
36
700
895
840
31
39.5
24
27
910
840
37
39.5
24
33
960
875
44
46.5
24
39
800
1015
950
34
43
24
30
1025
950
41
43
24
36
1085
990
50
51
24
45
900
1115
1050
34
46.5
28
30
1125
1050
41
46.5
28
36
1185
1090
50
55.5
28
45
1.000
1230
1160
37
50
28
33
1255
1170
44
50
28
39
1320
1210
57
60
28
52
Dimensions in millimeters.(*) For tubes and accessories of ductile iron the exterior diameter of the flanges must be: For DN 250, 400 mm. For DN 300, 455 mm. F = fixed flange. O = adjustable flange.

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