Mặt bích tiêu chuẩn Welding Neck Flanges BS4504 PN25
THÔNG SỐ KỸ THUẬT:
|
Nominal
|
D
|
C
|
h
|
Holes
|
A
|
do
|
t
|
H
|
H1
|
M
|
R
|
S
|
G
|
f
|
|
Pipe Size
|
|
10
|
90
|
60
|
14
|
4
|
17.2
|
17.2
|
16
|
35
|
6
|
28
|
3
|
1.8
|
40
|
2
|
|
15
|
95
|
65
|
14
|
4
|
21.3
|
21.3
|
16
|
38
|
6
|
32
|
3
|
2
|
45
|
2
|
|
20
|
105
|
75
|
14
|
4
|
26.9
|
26.9
|
18
|
40
|
6
|
40
|
4
|
2.3
|
58
|
2
|
|
25
|
115
|
85
|
14
|
4
|
33.7
|
33.7
|
18
|
40
|
6
|
46
|
4
|
2.6
|
68
|
2
|
|
32
|
140
|
100
|
18
|
4
|
42.4
|
42.4
|
18
|
42
|
6
|
56
|
5
|
2.6
|
78
|
3
|
|
40
|
150
|
110
|
18
|
4
|
48.3
|
48.3
|
18
|
45
|
7
|
64
|
5
|
2.6
|
88
|
3
|
|
50
|
165
|
125
|
18
|
4
|
60.3
|
60.3
|
20
|
48
|
8
|
74
|
5
|
2.9
|
102
|
3
|
|
65
|
185
|
145
|
18
|
8
|
76.1
|
76.1
|
22
|
52
|
10
|
92
|
5
|
2.9
|
122
|
3
|
|
80
|
200
|
160
|
18
|
8
|
88.9
|
88.9
|
24
|
58
|
12
|
110
|
6
|
3.2
|
138
|
3
|
|
100
|
235
|
190
|
22
|
8
|
114.3
|
114.3
|
24
|
65
|
12
|
134
|
6
|
3.6
|
162
|
3
|
|
125
|
270
|
220
|
26
|
8
|
139.7
|
139.7
|
26
|
68
|
12
|
162
|
6
|
4
|
188
|
3
|
|
150
|
300
|
250
|
26
|
8
|
168.3
|
168.3
|
28
|
75
|
12
|
190
|
6
|
4.5
|
218
|
3
|
|
200
|
360
|
310
|
26
|
12
|
219.1
|
219.1
|
30
|
80
|
16
|
244
|
8
|
6.3
|
278
|
3
|
|
250
|
425
|
370
|
30
|
12
|
273
|
273
|
32
|
88
|
18
|
296
|
10
|
7.1
|
335
|
4
|
|
300
|
485
|
430
|
30
|
16
|
323.9
|
323.9
|
34
|
92
|
18
|
350
|
10
|
8
|
395
|
4
|
|
350
|
555
|
490
|
33
|
16
|
355.6
|
355.6
|
38
|
100
|
20
|
398
|
10
|
8
|
450
|
4
|
|
400
|
620
|
550
|
36
|
16
|
406.4
|
406.4
|
40
|
110
|
20
|
452
|
10
|
8.8
|
505
|
4
|
|
450
|
670
|
600
|
36
|
20
|
457
|
457
|
42
|
110
|
20
|
500
|
12
|
8.8
|
555
|
4
|
|
500
|
730
|
660
|
36
|
20
|
508
|
508
|
44
|
125
|
20
|
558
|
12
|
10
|
615
|
5
|
|
600
|
845
|
770
|
39
|
20
|
610
|
610
|
46
|
125
|
20
|
660
|
12
|
11
|
720
|
5
|
|
700
|
960
|
875
|
42
|
24
|
711
|
711
|
46
|
125
|
20
|
760
|
12
|
12.5
|
820
|
5
|
|
800
|
1085
|
990
|
48
|
24
|
813
|
813
|
50
|
135
|
22
|
864
|
12
|
14.2
|
930
|
5
|
|
900
|
1185
|
1090
|
48
|
28
|
914
|
914
|
54
|
145
|
24
|
968
|
12
|
16
|
1030
|
5
|
|
1000
|
1320
|
1210
|
56
|
28
|
1016
|
1016
|
58
|
155
|
24
|
1070
|
12
|
17.5
|
1140
|
5
|
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