| ITALIAN STANDARDS UNI 2276 PLATE FLANGE PN 6 |
| Directions for the designation |
d1 |
a |
b |
D |
f |
Holes |
Screws |
Weight*
Kg |
Rated
Diameter |
External diameter
of the pipe |
Nominal |
Tolerance |
| 15 |
20 |
20,5 |
+0,5 |
55 |
10 |
80 |
11 |
4 |
M 10 |
0,34 |
| 21,3 |
22 |
0,33 |
| 20 |
25 |
25,5 |
65 |
12 |
90 |
11 |
4 |
M 10 |
0,51 |
| 26,9 |
27,5 |
0,50 |
| 25 |
30 |
30,5 |
75 |
12 |
100 |
11 |
4 |
M 10 |
0,63 |
| 33,7 |
34 |
0,61 |
| 32 |
38 |
38,5 |
90 |
14 |
120 |
14 |
4 |
M 12 |
1,09 |
| 42,4 |
43 |
1,05 |
| 40 |
44,5 |
45 |
100 |
14 |
130 |
14 |
4 |
M 12 |
1,26 |
| 48,3 |
49 |
1,23 |
| 50 |
57 |
58 |
110 |
14 |
140 |
14 |
4 |
M 12 |
1,38 |
| 60,3 |
61,5 |
1,35 |
| 65 |
76,1 |
77 |
130 |
14 |
160 |
14 |
4 |
M 12 |
1,68 |
| 80 |
88,9 |
90 |
150 |
16 |
190 |
18 |
4 |
M 16 |
2,63 |
| 100 |
108 |
109 |
+1,0 |
170 |
16 |
210 |
18 |
4*** |
M 16 |
3,05 |
| 114,3 |
115,5 |
2,92 |
| 125 |
133 |
134,5 |
200 |
18 |
240 |
18 |
8 |
M 16 |
4,11 |
| 139,7 |
141 |
3,90 |
| 150 |
159 |
160,5 |
225 |
20 |
265 |
18 |
8 |
M 16 |
5,16 |
| 168,3 |
170 |
4,78 |
| 175 |
193,7 |
195,5 |
255 |
22 |
295 |
18 |
8 |
M 16 |
6,27 |
| 200 |
219,1 |
221 |
280 |
22 |
320 |
18 |
8 |
M 16 |
6,91 |
| 250 |
267 |
269 |
335 |
24 |
375 |
18 |
12 |
M 16 |
9,53 |
| 273 |
275 |
9,04 |
| 300 |
323,9 |
326 |
395 |
24 |
440 |
22 |
12 |
M 20 |
12,1 |
| 350 |
355,6 |
358 |
445 |
26 |
490 |
22 |
12 |
M 20 |
17,0 |
| 368 |
370,5 |
15,6 |
| 400 |
406,4 |
409 |
+1,5 |
495 |
28 |
540 |
22 |
16 |
M 20 |
20,1 |
| 419 |
422 |
18,3 |
| 450 |
457,2 |
460,2 |
±5 |
550 |
28 |
595 |
22 |
16 |
M 20 |
25,8 |
| 500 |
508 |
511 |
600 |
30 |
645 |
22 |
20 |
M 20 |
30,0 |
| 600 |
609,6 |
612,6 |
705 |
30 |
755 |
25 |
20 |
M 22 |
37,9 |
| 700 |
711,2 |
714,2 |
810 |
32 |
860 |
25 |
24 |
M 22 |
47,9 |
| 800 |
812,8 |
815,8 |
920 |
34 |
975 |
30 |
24 |
M 27 |
62,9 |
| 900 |
914,4 |
917,4 |
1020 |
36 |
1075 |
30 |
24 |
M 27 |
74,6 |
| 1000 |
1016 |
1019 |
1120 |
36 |
1175 |
30 |
28 |
M 27 |
81,9 |
| * |
The weight is approximate and calculated on base 7.85 Kg/dm3 |
| ** |
Raw hole to be worked again according to the real external diameter of the pipe |
| *** |
For oil piping the flange should have 8 holes |
|
