Wenzhou CHENGJIU Flange Manufacruring Co., LTD
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- AUSTRALIAN FLANGE
AS 4087 PN16 & PN21 Flange
STEEL BACKING FLANGES AS 4087 - Figure B7
Nominal Pipe OD
Flange Size
OD
ID
Minimum Thickness
PCD
Bolt Hole No. x Dia.
Bolt Size
63
50
150
78
11
114
4X18
M16
75
65
165
92
11
127
4X18
M16
90
80
185
108
11
146
4X18
M16
110
100
215
128
13
178
4X18
M16
160
150
280
178
13
235
8X18
M16
200
200
335
235
19
292
8X18
M16
225
225
370
238
19
324
8X18
M16
250
250
405
288
19
356
8X22
M20
315
300
455
338
23
406
12X22
M20
355
350
525
376
30
470
12X26
M24
n/a
375
550
n/a
30
495
12X26
M24
400
400
580
430
30
521
12X26
M24
450
450
640
470
30
584
12X26
M24
500
500
705
533
38
641
16X26
M24
630
600
825
645
48
756
16X30
M27
710
700
910
740
56
845
20X30
M27
n/a
750
995
n/a
56
927
20X33
M30
800
800
1060
843
56
984
20X36
M33
900
900
1175
947
66
1092
24X36
M33
1000
1000
1255
1050
66
1175
24X36
M33
Note: This table has bolting compatibility with AS 2129 Table D flanges.
As per ISO 9624: "The inside diameter of the loose backing flange shall conform to the design of the flange adaptor. In some applications, values of the inside diameter of the loose backing flange differing from those given in the tables may be used."
STEEL BACKING FLANGES AS 4087 - Figure B8
Nominal Pipe OD
Flange Size
OD
ID
Minimum Thickness
PCD
Bolt Hole No. x Dia.
Bolt Size
63
50
165
78
15
127
4X18
M16
75
65
185
92
15
146
8X18
M16
90
80
205
108
15
165
8X18
M16
110
100
230
128
19
191
8X18
M16
160
150
305
178
24
260
12X22
M20
200
200
370
235
24
324
12X22
M20
225
225
405
238
30
356
12X26
M24
250
250
430
288
30
381
12X26
M24
315
300
490
338
30
438
16X26
M24
355
350
550
376
30
495
16X30
M27
n/a
375
580
n/a
38
521
16X30
M27
400
400
610
430
38
552
20X30
M27
450
450
675
470
38
610
20X33
M30
500
500
735
533
48
673
24X33
M30
630
600
850
645
58
781
24X36
M33
710
700
935
740
58
857
24X36
M33
n/a
750
1015
n/a
58
940
28X36
M33
800
800
1060
843
68
984
28X36
M33
900
900
1185
947
68
1105
32X39
M36
1000
1000
1275
1050
78
1194
36X39
M36
Note: This table has bolting compatibility with AS 2129 Table F & H flanges.
As per ISO 9624: "The inside diameter of the loose backing flange shall conform to the design of the flange adaptor. In some applications, values of the inside diameter of the loose backing flange differing from those given in the tables may be used."
