Din 2627 - 2628 - 2629 Flanges

Nominal pipe size

Diameter at weld Bevel

Flange Dia

Thk of Flange 

Dia of bolt circle 

Length through Hub

Dia of Hub

Wall thk

Radius of Hub

Straight protion 

Dia of R/F

Thk of R/F

No of 

Dia of bolt holes

DN

D1

D

B

K

H1

D3

S

R

H2

D4

F

Holes 

D2

KG

10

17.20

125

28

85

65

48

3.60

4

8

40

2

4

18

2.50

15

26.90

145

30

100

68

56

5.00

4

8

45

2

4

22

3.57

25

42.40

180

38

130

90

82

7.10

4

10

68

2

4

26

7.35

40

60.30

220

48

165

110

106

10.00

6

12

88

3

4

30

13.93

50

76.10

235

52

180

120

120

12.50

6

15

102

3

8

30

16.50

65

101.60

290

64

225

135

158

16.00

6

18

122

3

8

33

31.33

80

114.30

305

68

240

150

174

17.50

8

20

138

3

8

33

37.99

100

139.70

370

80

295

175

215

22.20

8

25

162

3

8

39

66.77

125

193.70

415

92

340

200

285

30.00

8

30

188

3

12

39

94.73

150

219.10

475

105

390

225

302

35.00

10

35

218

3

12

42

144.85

200

273.00

585

130

490

280

388

40.00

10

40

285

3

16

48

269.50

Nominal pipe size

Diameter at weld Bevel

Flange Dia

Thk of Flange 

Dia of bolt circle 

Length through Hub

Dia of Hub

Wall thk

Radius of Hub

Straight protion 

Dia of R/F

Thk of R/F

No of 

Dia of bolt holes

DN

D1

D

B

K

H1

D3

S

R

H2

D4

F

Holes 

D2

KG

10

17.2

125

24

85

58

44

2.6

4

6

40

2

4

18

2.09

15

21.3

130

26

90

60

48

2.6

4

6

45

2

4

18

2.47

25

33.7

150

28

105

65

60

3.6

4

8

68

2

4

22

3.53

40

48.3

185

34

135

80

84

5

6

10

88

3

4

26

6.58

50

60.3

200

38

150

85

95

6.3

6

10

102

3

8

30

8.09

65

76.1

230

42

180

95

124

8

6

12

122

3

8

30

12.59

80

101.6

255

46

200

102

136

11

8

12

138

3

8

33

16.32

100

127

300

54

235

120

164

14.2

8

14

162

3

8

33

27.07

125

152.4

340

60

275

140

200

16

8

16

188

3

12

39

38.79

150

177.8

390

68

320

160

240

17.5

10

18

218

3

12

39

59.05

200

244.5

485

80

400

190

305

25

10

25

385

3

12

42

109.45

250

298.5

585

100

490

215

385

32

12

30

345

3

16

48

189.94

Nominal pipe size

Diameter at weld Bevel

Flange Dia

Thk of Flange 

Dia of bolt circle 

Length through Hub

Dia of Hub

Wall thk

Radius of Hub

Straight protion 

Dia of R/F

Thk of R/F

No of 

Dia of bolt holes

DN

D1

D

B

K

H1

D3

S

R

H2

D4

F

Holes 

D2

KG

10

17.2

125

24

85

58

44

2.6

4

6

40

2

4

18

2.09

15

21.3

130

26

90

60

48

3.2

4

6

45

2

4

18

2.46

25

33.7

160

34

115

75

68

5

4

8

68

2

4

22

5.11

40

48.3

195

38

145

88

92

6.3

6

10

88

3

4

26

8.47

50

63.5

210

42

160

100

106

8

6

10

102

3

8

26

10.52

65

88.9

255

51

200

120

138

11

6

12

122

3

8

30

19.26

80

101.6

275

55

220

130

156

12.5

8

14

138

3

8

30

24.81

100

133

335

65

265

145

186

16

8

16

162

3

8

36

42.18

125

168.3

380

75

310

175

230

20

8

20

188

3

12

36

63.30

150

193.7

425

84

350

195

265

25

10

25

218

3

12

36

91.04

175

219.1

485

95

400

215

308

28

10

28

260

3

12

42

135.46

200

244.5

525

103

440

235

345

30

10

30

285

3

16

42

170.94

250

323.9

640

125

540

300

428

40

12

40

345

3

16

52

311.99