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Dimensions of the steel Flanges DN 200 - 8"
n° - number of holes
dia - diameter of bolts
| Flange standard |
PN
Rating |
D |
K |
L |
n° |
dia |
c |
d |
f |
UNI 2223
DIN 2501
BS 4504
NF E 29-203*
ISO/DIS 7005-1.2* |
2,5-6 |
320 |
280 |
18 |
8 |
M16 |
22 |
202 |
3 |
| 10 |
340 |
295 |
22 |
8 |
M20 |
24 |
212 |
3 |
| 16 |
340 |
295 |
22 |
12 |
M20 |
24 |
212 |
3 |
| 25 |
360 |
310 |
26 |
12 |
M24 |
30 |
218 |
3 |
| 40 |
375 |
320 |
30 |
12 |
M27 |
34 |
218 |
3 |
| 64 |
415 |
345 |
36 |
12 |
M33 |
42 |
215
|
3 |
| 100 |
430 |
360 |
36 |
12 |
M33 |
52 |
215
|
3 |
ISO/DIS 7005-1.2
NF E 29-203 |
20 |
345 |
298,5 |
22,0 |
8 |
M20 |
29,0 |
216 |
2 |
| 50 |
380 |
330,0
|
26,0 |
12 |
M24 |
41,5 |
216 |
2 |
| 100 |
420 |
349,0 |
32,5 |
12 |
M30 |
55,5 |
216 |
7** |
ANSI B 16.5
BS 1560 |
150 |
13,50
(342,9) |
11,75
(298,4) |
0,88
(22,2) |
8 |
0,75
(19,0) |
1,12
(28,6) |
8,50
(215,9) |
0,06
(1.6) |
| 300 |
15.00
(381,0) |
13,00
(330,2)
|
1,00
(25,4) |
12 |
0,88
(22,2) |
1,62
(41,3) |
8,50
(215,9) |
0,06
(1,6) |
| 400 |
15.00
(381,0) |
13,00
(330,2) |
1,12
(28,6) |
12 |
1,00
(25,4) |
1,88
(47,6) |
8,50
(215,9) |
0,25**
(6,4) |
| 600 |
16,50
(419,1) |
13,75
(349,2) |
1,25
(31,8) |
12 |
1,12
(28,6) |
2,19
(55,6) |
8,50
(215,9) |
0,25**
(6,4) |
| 900 |
18,50
(469,9) |
15,50
(393,7) |
1,50
(38,1) |
12 |
1,38
(34,9) |
2,50
(63,5) |
8,50
(215,9) |
0,25**
(6,4) |
BS 10
AS 2129 |
A |
13¼
(336,6) |
11½
(292,1) |
11/16
(17,5) |
8 |
⅝
(15,9) |
½
(12,7) |
— |
— |
| D |
13¼
(336,6) |
11½
(292,1) |
11/16
(17,5) |
8 |
⅝
(15,9) |
½
(12,7) |
— |
— |
| E |
13¼
(336,6) |
11½
(292,1) |
⅞
(22,2) |
8 |
¾
(19,0) |
¾
(19,0) |
— |
— |
| F |
14½
(368,3)
|
12¾
(323,9) |
⅞
(22,2) |
12 |
¾
(19,0) |
1
(25,4) |
— |
— |
| H |
14½
(368,3) |
12¾
(323,9) |
⅞
(22,2) |
12 |
¾
(19,0) |
1¼
(31,8) |
10¼
(260,4) |
1/16
(1.6) |
| J |
14½
(368,3) |
12¾
(323,9) |
1
(25,4)
|
12 |
⅞
(22,2) |
1⅝
(41,3) |
10¼
(260,4) |
1/16
(1.6) |
Note - The dimensions of ANSI - BS -AS flanges are in inch; the others are in mm (the ones in brackets included which are derived from the dimensions in inch)* For ratings 2,5-6-10-16-25-40 only** To be added to the thickness C of the flange
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Reference Manual 
