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Dimensions of the steel Flanges DN 20 - ¾"
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 |
90 |
65 |
11 |
4 |
M10 |
14 |
50 |
2 |
10 |
105 |
75 |
14 |
4 |
M12 |
16 |
58 |
2 |
16 |
105 |
75 |
14 |
4 |
M12 |
16 |
58 |
2 |
25 |
105 |
75 |
14 |
4 |
M12 |
18 |
58 |
2 |
40 |
105 |
75 |
14 |
4 |
M12 |
18 |
58 |
2 |
64 |
130 |
90 |
18 |
4 |
M16 |
22 |
58 |
2 |
100 |
130 |
90 |
18 |
4 |
M16 |
22 |
58 |
2 |
ISO/DIS 7005-1.2 NF E 29-203 |
20 |
100 |
70,0 |
16 |
4 |
M14 |
13 |
43 |
2 |
50 |
120 |
82,5 |
18 |
4 |
M16 |
16 |
43 |
2 |
100 |
120 |
82,5 |
18 |
4 |
M16 |
16 |
43 |
7** |
ANSI B 16.5 BS 1560 |
150 |
3,88 (98,5) |
2,75 (69,8) |
0,62 (15,9) |
4 |
0,50 (12,7) |
0,50 (12,7) |
1,69 (42,9) |
0,06 (1.6) |
300 |
4,62 (117,5) |
3,25 (82,6) |
0,75 (19,0) |
4 |
0,62 (15,9) |
0,62 (15,9) |
1,69 (42,9) |
0,06 (1,6) |
400 |
4,62 (117,5) |
3,25 (82,6) |
0,75 (19,0) |
4 |
0,62 (15,9) |
0,62 (15,9) |
1,69 (42,9) |
0,25** (6,4) |
600 |
4,62 (117,5) |
3,25 (82,6) |
0,75 (19,0) |
4 |
0,62 (15,9) |
0,62 (15,9) |
1,69 (42,9) |
0,25** (6,4) |
900 |
5,12 (130,2) |
3,50 (88,9) |
0,88 (22,2) |
4 |
0,75 (19,0) |
1,00 (25,4) |
1,69 (42,9) |
0,25** (6,4) |
BS 10 AS 2129 |
A |
4 (101,6) |
2⅞ (73) |
9/16 (14,3) |
4 |
½ (12,7) |
3/16 (4,8) |
— |
— |
D |
4 (101,6) |
2⅞ (73) |
9/16 (14,3) |
4 |
½ (12,7) |
⅜ (9,5) |
— |
— |
E |
4 (101,6) |
2⅞ (73) |
9/16 (14,3) |
4 |
½ (12,7) |
⅜ (9,5) |
— |
— |
F |
4 (101,6) |
2⅞ (73) |
9/16 (14,3) |
4 |
½ (12,7) |
⅜ (9,5) |
— |
— |
H |
4½ (114,3) |
3¼ (82,6) |
11/16 (17,5) |
4 |
½ (12,7) |
½ (12,7) |
2¼ (57,2) |
1/16 (1.6) |
J |
4½ (114,3) |
3¼ (82,6) |
11/16 (17,5) |
4 |
⅝ (15,9) |
⅝ (15,9) |
2¼ (57,2) |
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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