英标BS4504

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英标BS4504

This diagram illustrates the arrangement but not necessarily the correct number of bolt holes.

Refer to the column Bolting Number for the actual number.

Note:Dimension N1 N2 are measured at the intersection of the projections of the hub draft angle and the back face of the flange.

DIMENSIONS OF PN16 FLANGES

Nominal
size




DN

Mating dimensions
Outside
Diameter
of neck



A
Bore
Diameters
Flange
thickness
Diameter
of
shoulder



G
Lengths
Neck diameters
Radius





R
Neck thick-ness



S
Nominal
size




DN
Outside
Diameter


D
Diameter
of bolt
circle

K
Diameter
of bolt
hole

L
Bolting

Num-
ber

Size

B1

C1

C2

C3

H1

H2

H3

N1

N2
Codes
affected
101,105,111,112,113
111
101
112
101
111
112
113
105
105
112
113
111
111
111
112
113
111
112
113
111


10
15
20

25
32
40

50
65
80

100
125
150

200
250
300

350
400
450

500
600
700

800
900
1000

1200
1400
1600

1800
2000

mm
90
95
105

115
140
150

165
185
200

220
250
285

340
405
450

520
580
640

715
840
910

1025
1125
1255

1485
1685
1930

2130
2345
mm
60
65
75

85
100
110

125
145
160

180
210
240

295
355
410

470
525
585

850
770
840

950
1050
1170

1390
1590
1820

2020
2230

mm
14
14
14

14
18
18

18
18
18

18
18
22

22
26
26

26
30
30

33
36
36

39
39
42

48
48
56

56
62


4
4
4

4
4
4

4
4
8

8
8
8

12
12
12

16
16
20

20
20
24

24
28
28

32
36
40

44
48


M12
M12
M12

M12
M12
M16

M16
M16
M16

M16
M16
M20

M20
M24
M24

M24
M27
M27

M30
M33
M33

M36
M36
M39

M45
M45
M52

M52
M56
mm
17.2
21.3
26.9

33.7
42.4
48.3

60.3
76.1
88.96

114.3
139.7
168.3

219.1
273.0
323.9

355.6
406.4
457.0

508.0
610.0
711.0

813.0
914.0
1016.0

1220.0
1420.0
1620.0

1820.0
2020.0
mm
18.0
22.0
27.5

34.5
43.5
49.5

61.5
77.5
90.5

116.0
141.5
170.5

221.5
278.5
327.5

359.0
411.0
462.0

513.5
616.5
-

-
-
-

-
-
-

-
-

mm
14
14
16

16
18
18

20
20
20

22
22
24

26
29
32

35
38
42

46
52
60

68
76
84

98
-
-

-
-

mm
14
14
16

16
16
16

18
18
20

20
22
22

24
26
28

30
32
34

34
36
36

38
40
42

48
52
58

62
86
mm
14
14
16

16
16
16

18
18
20

20
22
22

24
26
28

30
32
36

36
44
48

52
58
64

76
-
-

-
-
mm
-
-
-

-
-
-

-
55
70

90
115
140

190
235
285

325
372
425

475
575
670

770
860
960

1160
-
-

-
-

mm
20
20
24

24
26
26

28
32
34

40
44
44

44
46
48

57
63
68

73
83
83

90
94
100

-
-
-

-
-

mm
35
35
38

38
40
42

45
45
50

52
55
55

62
70
78

82
85
87

90
95
100

105
110
120

130
145
160

170
190

mm
6
6
6

6
6
7

8
10
10

12
12
12

16
16
18

16
16
18

16
18
18

20
20
22

30
30
35

35
40

mm
28
32
39

46
56
64

74
92
110

130
158
184

234
288
342

390
444
490

546
650
750

848
948
1056

1260
1465
1668

1870
2072

mm
30
35
45

52
60
70

84
104
118

140
168
195

246
298
350

400
456
502

559
658
760

864
968
1072

-

-
-

-
-

mm
3
3
4

4
5
5

5
6
6

6
6
8

8
10
10

10
10
12

12
12
12

12
12
12

12
12
12

15
15
mm
1.8
2.0
2.3

2.6
2.6
2.6

2.9
2.9
3.2

3.6
4.0
4.5

5.6
6.3
7.1

8.0
8.0
8.0

8.0
8.8
8.8

10.0
10.0
10.0

12.5
14.2
16.0

17.5
20.0

10
15
20

25
32
40

50
65
80

100
125
150

200
250
300

350
400
450

500
600
700

800
900
1000

1200
1400
1600

1800
2000





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