FLANGES ACCORDING
TO BS NORMS
Welded
Seamless
Cast iron
Cast steel valves ANSI norms
Cast steel valves DIN norms
Cast iron resilient
Nodullar cast iron resilient
DIN and ANSI norms
BS norms
Special drawings
B.W. DIN norms
B.W. ANSI norms
DN
DN
.
.
.
.
.
.
.
weight
weight
B
mm
inch
B
De
Di
D1
C
Db
n
slip on
blind
blind
15
1/2"
9.5
95.2
22.4
50
66.6
14.3
4
0.45
0.48
.
20
3/4"
9.5
101.6
27.7
56
73.0
14.3
4
051
0.56
.
25
1"
9.5
114.3
34.5
66
82.5
14.3
4
0.65
0.72
.
32
1 1/4"
12.7
120.6
43.2
66
87.3
14.3
4
0.93
1.07
.
40
1 1/2"
12.7
137.3
49.5
82
98.4
14.3
4
1.14
1.35
.
50
2"
14.3
152.4
62
91
114.3
17.5
4
1.62
1.94
.
65
2 1/2"
14.3
165.1
77.5
100
127.0
17.5
4
1.77
2.30
.
80
3"
14.3
184
90.7
124
146
17.5
4
2.1
2.41
12
100
4"
17.5
216
116
152
177.8
17.5
4
3.2
3.92
14
125
5"
17.5
254
141
166
209.5
17.5
8
4.45
6.70
.
150
6"
17.5
280
171.1
209
235.0
17.5
8
4.9
6.65
14
200
8"
19
336.5
221
260
292.0
17.5
8
7.3
10.26
15
250
10"
19
406.4
276
311
355.5
22.2
8
10
14.91
15
300
12"
22.2
457
327
362
406.5
22.1
12
13
20.01
16
350
14"
25.4
527
359
419
470.0
25.4
12
22.1
42.30
.
400
16"
25.4
578
410
482
520.5
25.4
12
24.1
40.24
20
450
18"
28.5
641
461
534
584.0
25.4
12
32.9
54.68
22
500
20"
31.8
705
512
592
641.0
25.4
16
44.88
75.20
25
550
22"
31.8
762
565
641
698.5
28.6
16
48.7
111.30
.
600
24"
35
825.5
614
698.5
755.5
28.6
16
88
112.00
28
.
Tollerance ACC to DIN 2519
