FLANGE TABLES
Nominal Size 400mm (16")
Dia.
Bolt
No.
Dia.
Dia.
BS EN 1092
of
circle
of
of
of
flange diameter bolts bolts holes
Iron
PN6
PN10
PN16
PN25
PN40
PN64
PN100
ANSI
Class 125/150
Class 300
Class 600
Class 900
Class 1500
BS 10
Table A
Table D
Table E
Table F
Table H
540
565
580
620
660
670
715
495
515
525
550
585
585
620
16
16
16
16
16
16
16
M20
M24
M27
M33
M36
M39
M45
23
28
31
37
41
-
Dia.
Dia.
Height
Height
of raised of raised of raised of raised
face(3) face(3) face(3) face(3)
Iron
Steel
Iron
Steel
Thickness of flange
Grey Copper Cast and Ductile
Cast
Alloy
Forged
Cast
Iron Steel
Iron
22
26
30
36
39
42
48
463
480
480
503
535
-
465
482
490
505
535
535
535
4
4
4
4
4
-
2
2
2
2
2
2
2
28 (1)
32 (1)
38 (1)
48 (1)
-
-
22
26
32
40
50
60
78
24.5
28
32
48
-
11/8 (29)
13/8 (35)
15/8 (41)
13/4 (44)
25/8 (67)
-
181/2 (470)
181/2 (470)
181/2 (470)
181/2 (470)
181/2 (470)
-
1/16 (2)
17/16 (37)
-
-
17/16 (37)
21/4 (57)
3 (76)
31/2 (89)
53/4 (146)
-
1 (25) 1 (25)
1 (25) 1 (25)
7/8 (22)
1 (25) 1 (25)
1 (25) 11/8 (29) 11/8 (29)
1 (25) 11/8 (29) 11/8 (29)
-
19 (483)
-
-
1 (25)
1 (25)
11/4 (32)
13/4 (44)
-
231/2 (597) 211/4 (540)
251/2 (648) 221/2 (572)
27 (686) 233/4 (603)
273/4 (705) 241/4 (616)
321/2 (826) 273/4 (705)
16
20
20
20
16
1 (25) 11/8 (29)
11/4 (32)
11/2 (38)
15/8 (41)
21/2 (64)
-
223/4 (578)
223/4 (578)
223/4 (578)
24 (610)
24 (610)
12
12
12
20
20
7/8 (22)
201/2 (521)
201/2 (521)
201/2 (521)
213/4 (552)
213/4 (552)
Dia.
of
holes
Steel
7/8 (22)
1/16 (2)
1/4 (6)
1/4 (6)
1/4 (6)
1/16 (2)
11/16 (27) 1 (25)
11/8 (29) 1 (25)
11/4 (32) 1 (25)
13/8 (35) 11/4 (32)
2 (51) 13/4 (44)
(1) These flange thicknesses are also valid for ductile iron flanges type 21-2
(2) Copper alloy flanges are always flat-faced
Nominal Size 450mm (18")
Dia.
Bolt
No.
Dia.
Dia.
BS EN 1092
of
circle
of
of
of
flange diameter bolts bolts holes
Iron
Dia.
of
holes
Steel
Dia.
Dia.
Height
Height
of raised of raised of raised of raised
face(3) face(3) face(3) face(3)
Iron
Steel
Iron
Steel
Thickness of flange
Grey Copper Cast and Ductile
Cast
Alloy
Forged
Cast
Iron Steel
Iron
PN6
595
550
16
M20
23
22
518
520
4
2
28 (1)
-
22
-
PN10
PN16
PN25
PN40
PN64
PN100
ANSI
Class 125/150
Class 300
Class 600
Class 900
Class 1500
BS 10
Table A
Table D
Table E
Table F
Table H
615
640
670
685
-
565
585
600
610
-
20
20
20
20
-
M24
M27
M33
M36
-
28
31
37
41
-
26
30
36
39
-
530
548
548
560
-
532
550
555
560
-
4
4
4
4
-
2
2
2
2
-
32 (1)
40 (1)
50 (1)
-
-
28
40
46
57
-
25.5
30
34.5
49
-
25 (635)
28 (711)
291/4 (743)
31 (787)
36 (914)
223/4 (578)
243/4 (629)
253/4 (654)
27 (686)
301/2 (775)
16
24
20
20
16
11/8 (29) 11/4 (32)
11/4 (32)
15/8 (41)
17/8 (48)
23/4 (70)
-
11/4 (32)
13/8 (35)
13/4 (44)
2 (51)
27/8 (73)
-
21 (533)
21 (533)
21 (533)
21 (533)
21 (533)
-
1/16 (2)
19/16 (40)
-
-
19/16 (40)
23/8 (60)
31/4 (83)
4 (102)
63/8 (162)
-
251/4 (641)
251/4 (641)
251/4 (641)
261/2 (673)
261/2 (673)
23 (584)
23 (584)
23 (584)
24 (610)
24 (610)
12
12
16
20
20
7/8 (22)
1 (25)
1 (25)
1 (25)
11/4 (32)
11/4 (32)
-
21 (533)
-
-
11/16 (27)
11/4 (32)
13/8 (35)
11/2 (38)
21/8 (54)
11/16 (27)
11/8 (29)
11/8 (29)
13/8 (35)
17/8 (48)
11/8 (29)
11/8 (29)
13/8 (35)
17/8 (48)
-
7/8 (22)
7/8 (22)
11/8 (29)
11/8 (29)
-
1/16 (2)
1/4 (6)
1/4 (6)
1/4 (6)
1/16 (2)
(1) These flange thicknesses are also valid for ductile iron flanges type 21-2
0813
(2) Copper alloy flanges are always flat-faced
Technical Helpline: 0845 604 1790
E: tech-enquiries@hattersley.com W: www.hattersley.com
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