Germany standard flange DIN 2636 welding neck flanges; nominal pressure 64

Pipe

Flange

Neck

Raised Face

Drilling

Approx.

Weight

(7.85 kg/dm3)

kg

Nominal

Size

d1

D

b

k

h1

d3

s

r

h2

d4

f

Number

of

Holes

Bolt

Diameter

d2

ISO Series

DIN Series

10~40＊

Refer to DN10~40 of DIN 2637

50

57

180

26

135

62

78

2.9

6

10

95

3

4

M20

(3/4")

23

4.55

60.3*)

82

65

76.1*)

205

26

160

68

98

3.2

6

12

120

3

8

M20

(3/4")

23

5.73

80

88.9*)

215

28

170

72

112

3.6

8

12

130

3

8

M20

(3/4")

23

6.69

100

108

250

30

200

78

132

4

8

12

160

3

8

M24

(7/8")

27

9.66

114.3*)

138

125

133

295

34

240

88

162

4.5

8

12

185

3

8

M27

(1")

30

15.1

139.7*)

168

150

159

345

36

280

95

192

5.6

10

12

215

3

8

M30

(1 1/8")

33

21.9

168.3*)

202

-175

-191

375

40

310

105

225

6.3

10

16

245

3

12

M30

(1 1/8")

33

23.7

193.7*)

228

200

216

415

42

340

110

252

7.1

10

16

270

3

12

M33

(1 1/4")

36

34.9

219.1*)

256

250

267

470

46

400

125

310

8.8

12

18

325

3

12

M33

(1 1/4")

36

49.6

273*)

316

300

318

530

52

460

140

365

11

12

18

375

4

16

M33

(1 1/4")

36

68.7

323.9*)

372

350

368

600

56

525

150

420

12.5

12

20

435

4

16

M36

(1 3/8")

39

94.6

355.6*)

400

419

670

60

585

160

475

14.2

12

20

485

4

16

M39

(1 1/2")

42

124

406.4*)