| ANSI FLANGES
We offer a complete
range of ANSI flanges for use with nominal bore pipe in grades 304, 316
and 321 to 150, 300, 600 and 1500Lb ratings. Specials can be manufactured
to customer’s special requirements. We also offer BS4504 and Table
flanges. Please contact our sales
department for further information.
| |
WELD
NECK FLANGE |
| |
SOCKET
WELD FLANGE |
| |
SCREWED
FLANGE |
| |
SLIP
ON BOSS FLANGE |
 |
BLIND
FLANGE |
(The diagram
shows the correct position but not necessarily the correct number
of boltholes.)
|
ANSI
B16.5 CLASS 150
| N.B.
SIZE |
D |
K |
L |
A |
C |
N |
H1 |
H2 |
H3 |
H4 |
T |
B1 |
B2 |
B3 |
R |
R1 |
U |
O |
F |
No.
of Holes |
| Inches |
mm |
| ½" |
15 |
89 |
60.3 |
15.9 |
21.3 |
11.1 |
30 |
15.9 |
47.6 |
15.9 |
Min
6.4mm |
15.9 |
22.4 |
Schedule
to be supplied by purchaser |
23 |
3 |
3 |
9.5 |
34.9 |
1.6 |
4 |
| ¾" |
20 |
98 |
69.8 |
15.9 |
26.7 |
12.7 |
38 |
15.9 |
52.4 |
15.9 |
15.9 |
27.7 |
28 |
3 |
3 |
11 |
42.9 |
1.6 |
4 |
| 1" |
25 |
108 |
79.4 |
15.9 |
33.4 |
14.3 |
49 |
17.5 |
55.6 |
17.5 |
17.5 |
34.5 |
35 |
3 |
3 |
12.5 |
50.8 |
1.6 |
4 |
| 1
¼" |
32 |
117 |
88.9 |
15.9 |
42.2 |
15.9 |
59 |
20.6 |
57.2 |
20.6 |
20.6 |
43.2 |
43.5 |
3 |
5 |
14.5 |
63.5 |
1.6 |
4 |
| 1
½" |
40 |
127 |
98.4 |
15.9 |
48.3 |
17.5 |
65 |
22.2 |
61.9 |
22.2 |
22.2 |
49.5 |
50 |
3 |
6.5 |
16 |
73 |
1.6 |
4 |
| 2" |
50 |
152 |
120.6 |
19 |
60.3 |
19 |
78 |
25.4 |
63.5 |
25.4 |
25.4 |
62 |
52.5 |
3 |
8 |
17.5 |
92.1 |
1.6 |
4 |
| 2
½" |
65 |
178 |
139.7 |
19 |
73 |
22.2 |
90 |
28.6 |
69.9 |
28.6 |
28.6 |
74.7 |
75.5 |
3 |
8 |
19 |
104.8 |
1.6 |
4 |
| 3" |
80 |
190 |
152.4 |
19 |
88.9 |
23.8 |
108 |
30.2 |
69.9 |
30.2 |
30.2 |
90.7 |
91.5 |
3 |
9.5 |
20.5 |
127 |
1.6 |
4 |
| 3
½" |
88 |
215.9 |
177.8 |
19 |
101.6 |
23.8 |
122 |
31.8 |
71.4 |
31.8 |
31.8 |
103.4 |
104.1 |
3 |
9.7 |
|
139.7 |
1.6 |
8 |
| 4" |
100 |
229 |
190.5 |
19 |
114.3 |
23.8 |
135 |
33.3 |
76.2 |
33.3 |
33.3 |
116.1 |
117 |
3 |
11 |
|
157.2 |
1.6 |
8 |
| 5" |
125 |
254 |
215.9 |
22.2 |
141.3 |
23.8 |
164 |
36.5 |
88.9 |
36.5 |
36.5 |
143.8 |
145 |
6.5 |
11 |
|
185.7 |
1.6 |
8 |
| 6" |
150 |
279 |
241.3 |
22.2 |
168.3 |
25.4 |
192 |
39.7 |
88.9 |
39.7 |
39.7 |
170.7 |
171 |
6.5 |
12.5 |
|
215.9 |
1.6 |
8 |
| 8" |
200 |
343 |
298.4 |
22.2 |
219.1 |
28.6 |
246 |
44.5 |
101.6 |
44.5 |
|
221.5 |
222 |
6.5 |
12.5 |
|
269.9 |
1.6 |
8 |
| 10" |
250 |
406 |
362 |
25.4 |
273 |
30.2 |
305 |
49.2 |
101.6 |
49.2 |
|
276.4 |
277 |
6.5 |
12.5 |
|
323.8 |
1.6 |
12 |
| 12" |
300 |
483 |
431.8 |
25.4 |
323.9 |
31.8 |
365 |
55.6 |
114.3 |
55.6 |
|
327.2 |
328 |
6.5 |
12.5 |
|
381 |
1.6 |
12 |
| 14" |
350 |
533 |
476.2 |
28.6 |
355.6 |
34.9 |
400 |
57.2 |
127 |
79.4 |
|
359.2 |
360 |
6.5 |
12.5 |
|
412.7 |
1.6 |
12 |
| 16" |
400 |
597 |
539.8 |
28.6 |
406.4 |
36.5 |
457 |
63.5 |
127 |
87.3 |
|
410.5 |
411 |
6.5 |
12.5 |
|
469.9 |
1.6 |
16 |
| 18" |
450 |
635 |
577.8 |
31.8 |
457.2 |
39.7 |
505 |
68.3 |
139.7 |
96.8 |
|
461.8 |
462 |
6.5 |
12.5 |
|
533.4 |
1.6 |
16 |
| 20" |
500 |
698 |
635 |
31.8 |
508 |
42.9 |
559 |
73 |
144.5 |
103.2 |
|
513.1 |
514 |
6.5 |
12.5 |
|
584.2 |
1.6 |
20 |
| 24" |
600 |
813 |
749.3 |
34.9 |
609.6 |
47.6 |
664 |
82.6 |
152.4 |
111.1 |
|
616 |
616 |
6.5 |
12.5 |
|
692.1 |
1.6 |
20 |
ANSI
B16.5 CLASS 300
| N.B.
SIZE |
D |
K |
L |
A |
C |
N |
H1 |
H2 |
H3 |
H4 |
T |
B1 |
B2 |
B3 |
R |
R1 |
U |
O |
F |
No.
of Holes |
| Inches |
mm |
| ½" |
15 |
95 |
66.7 |
15.9 |
21.3 |
14.3 |
38 |
22.2 |
52.4 |
22.2 |
Min
6.4mm |
16 |
22.4 |
Schedule
to be supplied by purchaser |
23 |
3 |
3 |
9.5 |
34.9 |
1.6 |
4 |
| ¾" |
20 |
117 |
82.6 |
19.0 |
26.7 |
15.9 |
48 |
25.4 |
57.2 |
25.4 |
16 |
27.7 |
28 |
3 |
3 |
11 |
42.9 |
1.6 |
4 |
| 1" |
25 |
124 |
88.9 |
19.0 |
33.4 |
17.5 |
54 |
27.0 |
61.9 |
27.0 |
17 |
34.5 |
35 |
3 |
3 |
12.5 |
50.8 |
1.6 |
4 |
| 1
¼" |
32 |
133 |
98.4 |
19.0 |
42.2 |
19.0 |
64 |
27.0 |
65.1 |
27.0 |
21 |
43.2 |
43.5 |
3 |
5 |
14.5 |
63.5 |
1.6 |
4 |
| 1
½" |
40 |
156 |
114.3 |
22.2 |
48.3 |
20.6 |
70 |
30.2 |
68.3 |
30.2 |
22 |
49.5 |
50 |
3 |
6.5 |
16 |
73.0 |
1.6 |
4 |
| 2" |
50 |
165 |
127.0 |
19.0 |
60.3 |
22.2 |
84 |
33.3 |
69.9 |
33.3 |
29 |
62.0 |
62.5 |
3 |
8 |
17.5 |
92.1 |
1.6 |
8 |
| 2
½" |
65 |
190 |
149.2 |
22.2 |
73.0 |
25.4 |
100 |
38.1 |
76.2 |
38.1 |
32 |
74.7 |
75.5 |
3 |
8 |
19 |
104.8 |
1.6 |
8 |
| 3" |
80 |
210 |
168.3 |
22.2 |
88.9 |
28.6 |
117 |
42.9 |
79.4 |
42.9 |
32 |
90.7 |
91.5 |
3 |
9.5 |
20.5 |
127.0 |
1.6 |
8 |
| 3
½" |
88 |
228.6 |
184.2 |
22.4 |
101.6 |
30.2 |
133.4 |
44.5 |
81.0 |
44.5 |
36.6 |
103.4 |
104.1 |
3 |
9.7 |
- |
139.7 |
1.6 |
8 |
| 4" |
100 |
254 |
200.0 |
22.2 |
114.3 |
31.8 |
146 |
47.6 |
85.7 |
47.6 |
37 |
116.1 |
117 |
3 |
9.5 |
- |
157.2 |
1.6 |
8 |
| 5" |
125 |
279 |
235.0 |
22.2 |
141.3 |
34.9 |
178 |
50.8 |
98.4 |
50.8 |
43 |
143.8 |
145 |
6.5 |
11 |
- |
185.7 |
1.6 |
8 |
| 6" |
150 |
318 |
269.9 |
22.2 |
168.3 |
36.5 |
206 |
52.4 |
98.4 |
52.4 |
46 |
170.7 |
171 |
6.5 |
12.5 |
- |
215.9 |
1.6 |
12 |
| 8" |
200 |
381 |
330.2 |
25.4 |
219.1 |
41.3 |
260 |
61.9 |
111.1 |
61.9 |
- |
221.5 |
222 |
6.5 |
12.5 |
- |
269.9 |
1.6 |
12 |
| 10" |
250 |
444 |
387.4 |
28.6 |
273.0 |
47.6 |
321 |
66.8 |
117.5 |
95.3 |
- |
276.4 |
277 |
6.5 |
12.5 |
- |
323.8 |
1.6 |
16 |
| 12" |
300 |
521 |
450.8 |
31.8 |
323.9 |
50.8 |
375 |
73.0 |
130.2 |
101.6 |
- |
327.2 |
328 |
9.5 |
12.5 |
- |
381.0 |
1.6 |
16 |
| 14" |
350 |
584 |
514.4 |
31.8 |
355.6 |
54.0 |
425 |
76.2 |
142.9 |
111.1 |
- |
359.2 |
360 |
9.5 |
12.5 |
- |
412.7 |
1.6 |
20 |
| 16" |
400 |
648 |
571.5 |
34.9 |
406.4 |
57.2 |
483 |
82.6 |
146.1 |
120.7 |
- |
410.5 |
411 |
9.5 |
12.5 |
- |
469.9 |
1.6 |
20 |
| 18" |
450 |
711 |
628.6 |
34.9 |
457.2 |
60.3 |
533 |
88.9 |
158.8 |
130.2 |
- |
461.8 |
462 |
9.5 |
12.5 |
- |
533.4 |
1.6 |
24 |
| 20" |
500 |
775 |
685.8 |
34.9 |
508.0 |
63.5 |
587 |
95.3 |
162.0 |
139.7 |
- |
513.1 |
514 |
9.5 |
12.5 |
- |
584.2 |
1.6 |
24 |
| 24" |
600 |
914 |
812.8 |
41.3 |
609.6 |
69.8 |
702 |
106.4 |
168.3 |
152.4 |
- |
616.0 |
616 |
9.5 |
12.5 |
- |
692.1 |
1.6 |
24 |
ANSI B16.5 CLASS 600
| N.B.
SIZE |
D |
K |
L |
A |
C |
N |
H1 |
H2 |
H3 |
H4 |
T |
B1 |
B2 |
B3 |
R |
R1 |
U |
O |
F |
No.
of Holes |
| Inches |
mm |
| ½" |
15 |
95 |
66.7 |
15.9 |
21.3 |
14.3 |
38. |
22.2 |
52.4 |
22.2 |
Min
6.4mm |
16 |
22.4 |
Schedule
to be supplied by purchaser |
23 |
3 |
3 |
9.5 |
34.9 |
6.4 |
4 |
| ¾" |
20 |
117 |
82.6 |
19 |
26.7 |
15.9 |
48 |
25.4 |
57.2 |
25.4 |
16 |
27.7 |
82 |
3 |
3 |
11 |
42.9 |
6.4 |
4 |
| 1" |
25 |
124 |
88.9 |
19 |
33.4 |
17.5 |
54 |
27.0 |
61.9 |
27.0 |
17 |
34.5 |
38 |
3 |
3 |
12.5 |
50.8 |
6.4 |
4 |
| 1
¼" |
32 |
13 |
98.4 |
19 |
42.2 |
20.6 |
64 |
28.6 |
66.8 |
28.6 |
21 |
43.2 |
43.5 |
3 |
5 |
14.5 |
63.5 |
6.4 |
4 |
| 1
½" |
40 |
156 |
114.3 |
22.2 |
48.3 |
22.2 |
70 |
31.8 |
69.9 |
31.8 |
22 |
49.5 |
50 |
3 |
6.5 |
16 |
73.0 |
6.4 |
4 |
| 2" |
50 |
165 |
127.0 |
19 |
60.3 |
25.4 |
84 |
36.5 |
73.0 |
36.5 |
29 |
62.0 |
62.5 |
3 |
8 |
17.5 |
92.1 |
6.4 |
8 |
| 2
½" |
65 |
| |
info section 
