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Ductile Iron Pipe and Fittings
Flange Details

 
Allowable pressure ratings table for fittings used within a PN35 pipeline with flange joints. 
 
Flange to AS4087
DN
Allowable Operating Pressure - MPa
Allowable Max. Operating Pressure – MPA
Allowable Site Test Pressure - MPa
PN16
100 – 750
1.6
1.92
2.0
PN35
100 – 750
3.5
4.2
4.38

 

 
DN
PN
O.D.of Flange (mm)
“D”
Flange Thisckness (mm)
“T”
Pitch Circle Dia. (mm)
“P”
No. of Bolts
Bolt Size (mm)
Bolt hole Dia. (mm)
Suggested Bolt length
Dia. Of raised face (mm)
“F”
Raise Face height (mm)
“t"
80
16
185
18
145
4
M16
18
65
122
3
 
35
205
22
165
8
M16
18
75
141
3
 
T/E
185
 
145
4
M16
18
65
122
3
100
16
215
20
178
4
M16
18
75
154
3
 
35
230
22
191
8
M16
18
90
167
3
 
T/E
215
 
178
8
M16
18
75
154
3
150
16
280
23
235
8
M16
18
75
211
3
 
35
305
27
260
12
M20
22
90
232
3
 
T/E
280
 
235
8
M20
22
75
211
3
200
16
335
23
292
8
M16
18
90
268
3
 
35
370
31
324
12
M20
22
100
295
3
 
T/E
335
 
292
8
M20
22
90
268
3
225
16
370
24
324
8
M16
18
90
300
3
 
35
405
35
356
12
M24
26
120
324
3
 
T/E
370
 
324
12
M20
22
90
300
3
250
16
405
24
356
8
M20
22
90
328
3
 
35
430
34
381
12
M24
26
120
349
3
 
T/E
405
 
356
12
M20
22
90
328
3
300
16
455
30
406
12
M20
22
100
378
4
 
35
490
35
438
16
M24
26
120
405
4
 
T/E
455
 
406
12
M24
26
100
378
4
375
16
550
33
495
12
M24
26
100
463
4
 
35
580
42
521
16
M27
30
130
485
4
 
T/E
550
 
495
12
M24
26
100
463
4
450
16
640
33
584
12
M24
26
120
552
4
 
35
675
46
610
20
M30
33
150
571
4
 
T/E
640
 
584
16
M24
26
120
552
4
500
16
705
35
641
16
M24
26
120
609
4
 
35
735
49
673
24
M30
33
150
634
4
 
T/E
705
 
641
16
M24
26
120
609
4
600
16
825
42
756
16
M27
30
130
720
5
 
35
850
54
781
24
M33
36
180
739
5
 
T/E
825
 
756
16
M30
33
130
720
5
750
16
995
47
927
20
M30
33
130
888
5
 
35
1015
59
940
28
M33
36
180
893
5
 
T/E
995
 
927
20
M33
36
130
888
5
 
Bolting requirements (Guide only)                     

PN16 / Table E – Gal. Carbon Steel grade 4.5 minimum, 316s/s grade 50 minimum PN35 – Gal. Carbon Steel Grade 8.8 minimum, 316S/S Grade 70 minimum.



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