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| Welded Neck Flange Specification |
 Weld Neck Flanges are drilled(machined) with the wall thickness of the flange having the same dimensions of the matching pipe, the lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the small the bore, they are normally used for highpressure, cold or hot temperature |
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| Branch NB |
A |
B |
D |
E |
F |
Gx.No |
H |
Weight Kg |
| 1/2" (15) |
89 |
48 |
11,6 |
35.0 |
60.3 |
15.8 x 4 |
21.3 |
0.6 |
| 3/4" (20) |
99 |
53 |
13.2 |
43.0 |
69.8 |
15.8 x 4 |
26.9 |
0.8 |
| 1" (25) |
108 |
56 |
14.7 |
51.0 |
79.4 |
15.8 x 4 |
33.7 |
1.1 |
| 1 1/2" (40) |
127 |
62 |
19.5 |
73.0 |
98.4 |
15.8 x 4 |
48.3 |
1.8 |
| 2" (50) |
152 |
64 |
22.7 |
92.0 |
120.6 |
19.0 x 4 |
60.3 |
2.7 |
| 3" (80) |
191 |
70 |
24.3 |
127.0 |
152.4 |
19.0 x 4 |
88.9 |
4.5 |
| 4" (100) |
229 |
77 |
24.3 |
157.0 |
190.5 |
19.0 x 4 |
114.3 |
7.0 |
| 6" (150) |
279 |
89 |
25.9 |
215.0 |
241.3 |
22.2 x 8 |
168.3 |
10.8 |
| 8" (200) |
343 |
102 |
29.0 |
270.0 |
298.4 |
22.2 x 8 |
219.1 |
18.0 |
| 10" (250) |
400 |
102 |
30.6 |
324.0 |
362.0 |
25.4 x 12 |
273.0 |
24.0 |
| 12" (483) |
483 |
115 |
32.2 |
381.0 |
432 |
25.4 x 12 |
323.9 |
37.0 |
| 14" (350) |
533 |
127 |
35.4 |
413.0 |
476.3 |
28.4 x 12 |
3.55.6 |
14.0 |
| 16" (400) |
597 |
127 |
37.0 |
470.0 |
539.8 |
28.4 x 16 |
406.4 |
61.0 |
| 18" (450) |
635 |
140 |
40.1 |
533.0 |
577.9 |
31.8 x 16 |
457.2 |
68.0 |
| 20" (500) |
698 |
145 |
43.3 |
584.0 |
635.5 |
31.8 x 16 |
508.0 |
84.0 |
| 24" (600) |
813 |
153 |
47.8 |
692.0 |
749.3 |
35.0 x 16 |
609.6 |
115.0 |
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| Branch NB |
A |
B |
D |
E |
F |
Gx.No |
H |
Weight Kg |
| 1/2" (15) |
96 |
52 |
14.7 |
35.0 |
66.7 |
15.8 x 4 |
21.3 |
1.5 |
| 3/4" (20) |
117 |
57 |
16.3 |
43.0 |
82.6 |
15.8 x 4 |
26.9 |
1.8 |
| 1" (25) |
124 |
62 |
17.9 |
51.0 |
88.9 |
15.8 x 4 |
33.7 |
2.0 |
| 1 1/2" (40) |
156 |
68 |
21.1 |
73.0 |
114.3 |
15.8 x 4 |
48.3 |
3.5 |
| 2" (50) |
165 |
70 |
22.7 |
92.0 |
127.0 |
19.0 x 4 |
60.3 |
4.0 |
| 3" (80) |
210 |
79 |
29.0 |
127.0 |
168.3 |
19.0 x 4 |
88.9 |
7.0 |
| 4" (100) |
254 |
86 |
32.2 |
157.0 |
200.0 |
19.0 x 4 |
114.3 |
11.0 |
| 6" (150) |
318 |
98 |
37.0 |
215.0 |
269.9 |
22.2 x 8 |
168.3 |
19.0 |
| 8" (200) |
381 |
111 |
41.7 |
270.0 |
330.2 |
22.2 x 8 |
219.1 |
30.0 |
| 10" (250) |
445 |
117 |
48.1 |
324.0 |
387.4 |
25.4 x 12 |
273.0 |
41.0 |
| 12" (483) |
521 |
130 |
51.3 |
381.0 |
450.8 |
25.4 x 12 |
323.9 |
62.0 |
| 14" (350) |
584 |
143 |
54.4 |
413.0 |
514.3 |
28.4 x 12 |
3.55.6 |
86.0 |
| 16" (400) |
648 |
146 |
57.6 |
470.0 |
571.5 |
28.4 x 16 |
406.4 |
106.0 |
| 18" (450) |
711 |
159 |
60.8 |
533.0 |
628.6 |
31.8 x 16 |
457.2 |
131.0 |
| 20" (500) |
775 |
162 |
64.0 |
584.0 |
685.8 |
31.8 x 16 |
508.0 |
158.0 |
| 24" (600) |
914 |
168 |
70.3 |
692.0 |
812.8 |
35.0 x 16 |
609.6 |
230.0 |
. |
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Notes :- |
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Flange dimensions to ANSI B16.5. |
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Dimensions "B" & "D" includes raised face thickness. |
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Bore (SCH) "C" purchasess to Specity. |
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Larger outlet sizes are avilable on applications. |
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ANSI 150# / 300# 2mm Raised Face. |
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ANSI 600# / 2500# 7mm Raised Face. |
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