Welding neck flanges

DN

d1

D

b

k

h1

d3

s

h2

d4

f

d2

Number of holes

kg

10

14.0

90

14

60

35

25

1.8

6

40

2

14

4

0.580

10

17.2

90

14

60

35

28

1.8

6

40

2

14

4

0.580

15

20.0

95

14

65

35

30

2.0

6

45

2

14

4

0.648

15

21.3

95

14

65

35

32

2.0

6

45

2

14

4

0.648

20

25.0

105

16

75

38

38

2.3

6

58

2

14

4

0.952

20

26.9

105

16

75

38

40

2.3

6

58

2

14

4

0.952

25

30.0

115

16

85

38

42

2.6

6

68

2

14

4

1.140

25

33.7

115

16

85

38

45

2.6

6

68

2

14

4

1.140

32

38.0

140

16

100

40

52

2.6

6

78

2

18

4

1.690

32

42.4

140

16

100

40

56

2.6

6

78

2

18

4

1.690

40

44.5

150

16

110

42

60

2.6

7

88

3

18

4

1.860

40

48.3

150

16

110

42

64

2.6

7

88

3

18

4

1.860

50

57.0

165

18

125

45

72

2.9

8

102

3

18

4

2.530

50

60.3

165

18

125

45

75

2.9

8

102

3

18

4

2.530

65

76.1

185

18

145

45

90

2.9

10

122

3

18

4

3.060

80

88.9

200

20

160

50

105

3.2

10

138

3

18

8

3.700

100

108.0

220

20

180

52

125

3.6

12

158

3

18

8

4.620

100

114.3

220

20

180

52

131

3.6

12

158

3

18

8

4.620

125

133.0

250

22

210

55

150

4.0

12

188

3

18

8

6.300

125

139.7

250

22

210

55

156

4.0

12

188

3

18

8

6.300

150

159.0

285

22

240

55

175

4.5

12

212

3

22

8

7.750

150

168.3

285

22

240

55

184

4.5

12

212

3

22

8

7.750

175

193.7

315

24

270

60

210

5.4

12

242

3

22

8

9.850

200

219.1

340

24

295

62

235

5.9

16

268

3

22

12

11.000

250

267.0

405

26

355

70

285

6.3

16

320

3

26

12

15.600

250

273.0

405

26

355

70

292

6.3

16

320

3

26

12

15.600

300

323.9

460

28

410

78

344

7.1

16

378

4

26

12

22.000

350

355.6

520

30

470

82

390

8.0

16

438

4

26

16

31.200

350

368.0

520

30

470

82

390

8.0

16

438

4

26

16

28.800

400

406.4

580

32

525

85

445

8.0

16

490

4

30

16

39.300

400

419.0

580

32

525

85

445

8.0

16

490

4

30

16

36.300

500

508.0

715

34

650

90

548

8.0

16

610

4

33

20

61.000

600

610.0

840

36

770

95

652

8.8

18

725

5

36

20

75.400

700

711.0

910

36

840

100

755

8.8

18

795

5

36

24

77.000

800

813.0

1025

38

950

105

855

10.0

20

900

5

39

24

101.000

900

914.0

1125

40

1050

110

955

10.0

20

1000

5

39

28

122.000

1000

1016.0

1255

42

1170

120

1058

10.0

22

1115

5

42

28

162.000

1200

1220.0

1485

48

1390

130

1262

12.5

30

1330

5

48

32

243.000

1400

1420.0

1685

52

1590

145

1465

14.2

30

1530

5

48

36

323.000

1600

1620.0

1930

58

1820

160

1668

16.0

35

1750

5

56

40

479.000