DINFLANGE DIN 2576

(Dimensions in mm)

 

Pipe

Flange

Drilling

Approx. Weight
(7.85 kg/dm3)
kg

Nominal
Size

d1

d5

D

b1)

k

Number
of Holes

Bolt Diameter

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

0.675
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

240

8

M20

(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*)

217
220.1

340

24

295

8

M20

(3/4")

23

9.50
9.31

250

318
323.9*)

268
274

395

26

350

12

M20

(3/4")

23

12.5
11.9

300

318
323.9*)

319
324.9

445

26

400

12

M20

(3/4")

23

14.4
13.8

350

355.6*)
368

356.6
369

505

28

460

16

M20

(3/4")

23

20.6
19.0

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

41.1
37.9

*) Outside diameter of pipe corresponds to ISO 
recommendation R64.
Nominal size in parentheses should preferably be avoided.
1) By finishing the face, plate thickness b1 is reduced 
by 1-1.5mm.
Material: St.37-2, DIN 17100
Process: Machining the outside diameter, bore, and bolt holes.
A: Gasket suface unfinished
B: Gasket surface finished
[ For shipbuilders ]
Machining the outside diameter, bore; and bolt 
holes; and chamfering the bore edge.
AS: Gasket surface unfinished
BS: Gasket surface finished