DIN 2576 
FLANGES, SLIP-ON TYPE FOR BRITISH OR WELDING NOMINAL PRESSURE 10

Pipe Flange
Bolts Weight of
one flange
7.85 kg/
dm3) kg
NW d1 ds D b1 k Number Thread d2
10 14
17.2)		 14.5
17.7		 90 14 60 4 M12 (1/2") 14 0.613
0.605
15 20
21.3)		 20.5
21.8		 95 14 65 4 M12 (1/2") 14 0675
0.669
20 25
26.9)		 25.5
27.4		 105 16 75 4 M12 (1/2") 14 0.947
0.936
25 30
33.7)		 30.5
34.2		 115 16 85 4 M12 (1/2") 14 1.14
1.11
32 38
42.4)		 38.5
42.9		 140 16 100 4 M16 (5/8") 18 1.66
1.62
40 44.5
48.3)		 45
48.8		 150 16 110 4 M16 (5/8") 18 1.89
1.86
50 57
60.3)		 57.5
60.8		 165 18 125 4 M16 (5/8") 18 2.51
2.47
65 76.1) 76.6 185 18 145 4 M16 (5/8") 18 3.00
80 88.9) 89.4 200 20 160 4 M16 (5/8") 18 3.79
100 108
114.3)		 108.5
114.8		 220 20 180 8 M16 (5/8") 18 4.20
4.03
125 133
139.7)		 133.5
140.2		 250 22 210 8 M16 (5/8") 18 5.71
5.46
150 159
168.3)		 159.5
168.8		 285 22 210 8 M16 (3/4") 23 6.72
6.57
175 191
193.7)		 192
194.7		 315 24 270 8 M20 (3/4") 23 8.60
8.45
200 216
219.1)		 216
220.1		 340 24 295 8 M20 (3/4") 23 9.50
9.31
250 267
273)		 268
274		 395 26 350 12 M20 (3/4") 23 12.5
11.9
400 406.4
419		 407.4
420		 565 32 515 16 M24 (7/8") 27 27.9
25.9
500 508)
521		 509
522		 670 38 620 20 M24 (7/8") 27 37.9
41.1