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Type of Flanges
Class & Size Range
Weld Neck Flanges
Slip On Flanges
Socket Weld Flanges
Lap Joint Flanges
Blind Flanges
Threaded Flanges
ASME B 16.47 A
ASME B16.47 B
WN Flange Bore
Figure 8 Blanks
Ring Joint Facing
AWWA Steel Ring
AWWA Steel hub
Approx Weight
Gaskets
Bolts & Nuts
PL Flanges (EN1092.1)
WN Flanges (EN1092.1)
SO Flanges (EN1092.1)
Th Flanges (EN1092.1)
BL Flanges (EN1092.1)
Backing Rings

WN Flanges (EN1092.1) 

Dimensions of Weld Neck Flanges PN 2.5  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

75

50

11

4

35

2

12

28

26

2.0

6

4

15

21.3

18

80

55

11

4

40

2

12

30

30

2.0

6

4

20

26.9

25

90

65

11

4

50

2

14

32

38

2.3

6

4

25

33.7

32

100

75

11

4

60

2

14

35

42

2.6

6

4

32

42.4

38

120

90

14

4

70

2

14

35

55

2.6

6

6

40

48.3

45

130

100

14

4

80

3

14

38

62

2.6

7

6

50

60.3

57

140

110

14

4

90

3

14

38

74

2.9

8

6

65

76.1

76

160

130

14

4

110

3

14

38

88

2.9

9

6

80

88.9

89

190

150

18

4

128

3

16

42

102

3.2

10

8

100

114.3

108

210

170

18

4

148

3

16

45

130

3.6

10

8

125

139.7

133

240

200

18

8

178

3

18

48

155

4.0

10

8

150

168.3

159

265

225

18

8

202

3

18

48

184

4.5

12

10

200

219.1

219

320

280

18

8

258

3

20

55

236

6.3

15

10

250

273

273

375

335

18

12

312

3

22

60

290

6.3

15

12

300

323.9

325

440

395

22

12

365

4

22

62

342

7.1

15

12

350

355.6

377

490

445

22

12

415

4

22

62

385

390

7.1

15

12

400

406.4

426

540

495

22

16

465

4

22

65

438

440

7.1

15

12

450

457

480

595

550

22

16

520

4

22

65

492

494

7.1

15

12

500

508

530

645

600

22

20

570

4

24

68

538

545

7.1

15

12

600

610

630

755

705

26

20

670

5

30

70

640

650

7.1

16

12

700

711

720

860

810

26

24

775

5

30

76

740

740

7.1

16

12

800

813

820

975

920

30

24

880

5

30

76

842

844

7.1

16

12

900

914

920

1075

1020

30

24

980

5

30

78

942

944

7.1

16

12

1000

1016

1020

1175

1120

30

28

1080

5

30

82

1045

8.0

16

16

1200

1219

1220

1375

1320

30

32

1280

5

32

94

1245

8.0

16

16

1400

1422

1420

1575

1520

30

36

1480

5

38

96

1445

8.8

16

16

1600

1626

1620

1790

1730

30

40

1690

5

46

102

1645

10.0

20

16

1800

1829

1820

1990

1930

30

44

1890

5

46

110

1845

11.0

20

16

2000

2032

2020

2190

2130

30

48

2090

5

50

122

2045

11.0

22

16

2200

2235

2220

2405

2340

33

52

2295

5

56

129

2248

11.0

25

18

2400

2438

2420

2605

2540

33

56

2495

5

62

143

2448

11.0

25

18

2600

2620

2805

2740

33

60

2695

5

64

148

2648

11.0

25

18

2800

2820

3030

2960

36

64

2910

5

74

161

2848

11.0

25

18

3000

3020

3230

3160

36

68

3110

5

80

170

3050

11.0

25

18

3200

3220

3430

3360

36

72

3310

5

84

180

3250

11.0

25

20

3400

3420

3630

3560

36

76

3510

5

90

194

3450

11.0

28

20

3600

3620

3840

3770

36

80

3720

5

96

201

3652

11.0

28

20

3800

3820

4045

3970

39

80

3920

5

102

212

3852

11.0

28

20

4000

4020

4245

4170

39

84

4120

5

106

226

4052

11.0

28

20

Dimensions of Weld Neck Flanges PN 6  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

75

50

11

4

35

2

12

28

26

2.0

6

4

15

21.3

18

80

55

11

4

40

2

12

30

30

2.0

6

4

20

26.9

25

90

65

11

4

50

2

14

32

38

2.3

6

4

25

33.7

32

100

75

11

4

60

2

14

35

42

2.6

6

4

32

42.4

38

120

90

14

4

70

2

14

35

55

2.6

6

6

40

48.3

45

130

100

14

4

80

3

14

38

62

2.6

7

6

50

60.3

57

140

110

14

4

90

3

14

38

74

2.9

8

6

65

76.1

76

160

130

14

4

110

3

14

38

88

2.9

9

6

80

88.9

89

190

150

18

4

128

3

16

42

102

3.2

10

8

100

114.3

108

210

170

18

4

148

3

16

45

130

3.6

10

8

125

139.7

133

240

200

18

8

178

3

18

48

155

4.0

10

8

150

168.3

159

265

225

18

8

202

3

18

48

184

4.5

12

10

200

219.1

219

320

280

18

8

258

3

20

55

236

6.3

15

10

250

273

273

375

335

18

12

312

3

22

60

290

6.3

15

12

300

323.9

325

440

395

22

12

365

4

22

62

342

7.1

15

12

350

355.6

377

490

445

22

12

415

4

22

62

385

390

7.1

15

12

400

406.4

426

540

495

22

16

465

4

22

65

438

440

7.1

15

12

450

457

480

595

550

22

16

520

4

22

65

492

494

7.1

15

12

500

508

530

645

600

22

20

570

4

24

68

538

545

7.1

15

12

600

610

630

755

705

26

20

670

5

30

70

640

650

7.1

16

12

700

711

720

860

810

26

24

775

5

30

76

740

740

8.0

16

12

800

813

820

975

920

30

24

880

5

30

76

842

844

8.0

16

12

900

914

920

1075

1020

30

24

980

5

34

78

942

944

8.0

16

12

1000

1016

1020

1175

1120

30

28

1080

5

38

82

1045

8.0

16

16

1200

1219

1220

1405

1340

33

32

1295

5

42

104

1248

8.8

20

16

1400

1422

1420

1630

1560

36

36

1510

5

56

114

1452

8.8

20

16

1600

1626

1620

1830

1760

39

40

1710

5

63

119

1655

10.0

20

16

1800

1829

1820

2045

1970

42

44

1920

5

69

133

1855

11.0

20

16

2000

2032

2020

2265

2180

42

48

2125

5

74

146

2058

12.5

25

16

2200

2235

2220

2475

2390

42

52

2335

5

81

154

2260

14.0

25

18

2400

2438

2420

2685

2600

48

56

2545

5

87

168

2462

15.0

25

18

2600

2620

2905

2810

48

60

2750

5

91

175

2665

16.0

25

18

2800

2820

3115

3020

48

64

2960

5

101

188

2865

17.0

30

18

3000

3020

3315

3220

48

68

3160

5

102

192

3068

20.0

30

18

3200

3220

3525

3430

48

72

3370

5

106

202

3272

20.0

30

20

3400

3420

3735

3640

48

76

3580

5

110

214

3475

22.0

35

20

3600

3620

3970

3860

56

80

3790

5

124

229

3678

22.0

35

20

Dimensions of Weld Neck Flanges PN 10  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

90

60

14

4

40

2

16

35

28

2.0

6

4

15

21.3

18

95

65

14

4

45

2

16

38

32

2.0

6

4

20

26.9

25

105

75

14

4

58

2

18

40

40

2.3

6

4

25

33.7

32

115

85

14

4

68

2

18

40

46

2.6

6

4

32

42.4

38

140

100

18

4

78

2

18

42

56

2.6

6

6

40

48.3

45

150

110

18

4

88

3

18

45

64

2.6

7

6

50

60.3

57

165

125

18

4

102

3

18

45

74

2.9

8

6

65

76.1

76

185

145

18

8

122

3

18

45

92

2.9

10

6

80

88.9

89

200

160

18

8

138

3

20

50

105

3.2

10

6

100

114.3

108

220

180

18

8

158

3

20

52

131

3.6

12

8

125

139.7

133

250

210

18

8

188

3

22

55

156

4.0

12

8

150

168.3

159

285

240

22

8

212

3

22

55

184

4.5

12

10

200

219.1

219

340

295

22

8

268

3

24

62

234

6.3

16

10

250

273

273

395

350

22

12

320

3

26

68

292

6.3

16

12

300

323.9

325

445

400

22

12

370

4

26

68

342

7.1

16

12

350

355.6

377

505

460

22

16

430

4

26

68

385

400

7.1

16

12

400

406.4

426

565

515

26

16

482

4

26

72

440

445

7.1

16

12

450

457

480

615

565

26

20

532

4

28

72

488

500

7.1

16

12

500

508

530

670

620

26

20

585

4

28

75

542

550

7.1

16

12

600

610

630

780

725

30

20

685

5

30

82

642

650

8.0

18

12

700

711

720

895

840

30

24

800

5

35

85

746

8.8

18

12

800

813

820

1015

950

33

24

905

5

38

96

850

8.8

18

12

900

914

920

1115

1050

33

28

1005

5

38

99

950

12.5

20

12

1000

1016

1020

1230

1160

36

28

1110

5

44

105

1052

12.5

20

16

1200

1219

1220

1455

1380

39

32

1330

5

55

132

1256

12.5

25

16

1400

1422

1420

1675

1590

42

36

1535

5

65

143

1460

14.2

25

16

1600

1626

1620

1915

1820

48

40

1760

5

75

159

1666

16.0

25

16

1800

1829

1820

2115

2020

48

44

1960

5

85

175

1868

17.5

30

16

2000

2032

2020

2325

2230

48

48

2170

5

90

186

2072

17.5

30

16

2200

2235

2550

2440

56

52

2370

5

100

202

2275

20.0

35

18

2400

2438

2760

2650

56

56

2570

5

110

218

2478

22.2

35

18

2600

2620

2960

2850

56

60

2780

5

110

224

2680

25.0

40

18

2800

2820

3180

3070

56

64

3000

5

124

244

2882

25.0

40

18

3000

3020

3405

3290

62

68

3210

5

132

257

3085

32.0

45

18

Dimensions of Weld Neck Flanges PN 16  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

90

60

14

4

40

2

16

35

28

2

6

4

15

21.3

18

95

65

14

4

45

2

16

38

32

2

6

4

20

26.9

25

105

75

14

4

58

2

18

40

40

2.3

6

4

25

33.7

32

115

85

14

4

68

2

18

40

46

2.6

6

4

32

42.4

38

140

100

18

4

78

2

18

42

56

2.6

6

6

40

48.3

45

150

110

18

4

88

3

18

45

64

2.6

7

6

50

60.3

57

165

125

18

4

102

3

18

45

74

2.9

8

6

65

76.1

76

185

145

18

8

122

3

18

45

92

2.9

10

6

80

88.9

89

200

160

18

8

138

3

20

50

105

3.2

10

6

100

114.3

108

220

180

18

8

158

3

20

52

131

3.6

12

8

125

139.7

133

250

210

18

8

188

3

22

55

156

4

12

8

150

168.3

159

285

240

22

8

212

3

22

55

184

4.5

12

10

200

219.1

219

340

295

22

12

268

3

24

62

235

6.3

16

10

250

273

273

405

355

26

12

320

3

26

70

292

6.3

16

12

300

323.9

325

460

410

26

12

378

4

28

78

344

7.1

16

12

350

355.6

377

520

470

26

16

438

4

30

82

390

400

8

16

12

400

406.4

426

580

525

30

16

490

4

32

85

445

450

8

16

12

450

457

480

640

585

30

20

550

4

34

83

490

506

8

16

12

500

508

530

715

650

33

20

610

4

36

84

548

559

8

16

12

600

610

630

840

770

36

20

725

5

40

88

670

670

10

18

12

700

711

720

910

840

36

24

795

5

40

104

755

755

10

18

12

800

813

820

1025

950

39

24

900

5

62

108

855

855

12.5

20

12

900

914

920

1125

1050

39

28

1000

5

64

118

955

958

12.5

20

12

1000

1016

1020

1255

1170

42

28

1115

5

68

137

1058

1060

12.5

22

16

1200

1219

1220

1485

1390

48

32

1330

5

78

160

1262

14.2

30

16

1400

1422

1420

1685

1590

48

36

1530

5

84

177

1465

16

30

16

1600

1626

1620

1930

1820

56

40

1750

5

102

204

1668

17.5

35

16

1800

1829

1820

2130

2020

56

44

1950

5

110

218

1870

20

35

16

2000

2032

2020

2345

2230

62

48

2150

5

124

238

2072

22

40

16

Dimensions of Weld Neck Flanges PN 25  EN 1092-1

DN Pipe OD, A Outside Diameter, D Diameter of Bolt Circle, K  Diameter of Bolt Holes, L No. of bolts Diameter of Raised Face, d Height of Raised Face, f1 Flange thickness, C Length of Flange, H Neck Diameter , N Wall thickness, S Length of right end, H1 Radius of Corners, r
Series Ⅰ Series Ⅱ Series Ⅰ Series Ⅱ
10 17.2 14 90 60 14 4 40 2 16 35 28 2.0 6 4
15 21.3 18 95 65 14 4 45 2 16 38 32 2.0 6 4
20 26.9 25 105 75 14 4 58 2 18 40 40 2.3 6 4
25 33.7 32 115 85 14 4 68 2 18 40 46 2.6 6 4
32 42.4 38 140 100 18 4 78 2 18 42 56 2.6 6 6
40 48.3 45 150 110 18 4 88 3 18 45 64 2.6 7 6
50 60.3 57 165 125 18 4 102 3 20 48 75 2.9 8 6
65 76.1 79 185 145 18 8 122 3 22 52 90 2.9 10 6
80 88.9 89 200 160 18 8 138 3 24 58 105 3.2 12 8
100 114.3 108 235 190 22 8 162 3 24 65 134 3.6 12 8
125 139.7 133 270 220 26 8 188 3 26 68 162 4.0 12 8
150 168.3 159 300 250 26 8 218 3 28 75 192 4.5 12 10
200 219.1 219 360 310 26 12 278 3 30 80 244 6.3 16 10
250 273 273 425 370 30 12 335 3 32 88 298 7.1 18 12
300 323.9 325 485 430 30 16 395 4 34 92 352 8.0 18 12
350 355.6 377 555 490 33 16 450 4 38 100 398 406 8.0 20 12
400 406.4 426 620 550 36 16 505 4 40 110 452 464 8.8 20 12
450 457 480 670 600 36 20 555 4 46 110 500 514 8.8 20 12
500 508 530 730 660 36 20 615 4 48 125 558 570 10.0 20 12
600 610 630 845 770 39 20 720 5 48 125 660 670 11.0 20 12
700 711 720 960 875 42 24 820 5 50 129 760 766 14.2 20 12
800 813 820 1085 990 48 24 930 5 53 138 864 874 16.0 22 12
900 914 920 1185 1090 48 28 1030 5 57 148 968 974 17.5 24 12
1000 1016 1020 1320 1210 56 28 1140 5 63 160 1070 1074 20.0 24 16

Dimensions of Weld Neck Flanges PN 40  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

90

60

14

4

40

2

16

35

28

 

 

 

15

21.3

18

95

65

14

4

45

2

16

38

32

2

6

4

20

26.9

25

105

75

14

4

58

2

18

40

40

2.3

6

4

25

33.7

32

115

85

14

4

68

2

18

40

46

2.6

6

4

32

42.4

38

140

100

18

4

78

2

18

42

56

2.6

6

6

40

48.3

45

150

110

18

4

88

3

18

45

64

2.6

7

6

50

60.3

57

165

125

18

4

102

3

20

48

75

2.9

8

6

65

76.1

76

185

145

18

8

122

3

22

52

90

2.9

10

6

80

88.9

89

200

160

18

8

138

3

24

58

105

3.2

12

8

100

114.3

108

235

190

22

8

162

3

24

65

134

3.6

12

8

125

139.7

133

270

220

26

8

188

3

26

68

162

4

12

8

150

168.3

159

300

250

26

8

218

3

28

75

192

4.5

12

10

200

219.1

219

375

320

30

12

285

3

34

88

244

6.3

16

10

250

273

273

450

385

33

12

345

3

38

105

306

7.1

18

12

300

323.9

325

515

450

33

16

410

4

42

115

362

8

18

12

350

355.6

377

580

510

36

16

465

4

46

125

408

418

8.8

20

12

400

406.4

4126

660

585

39

16

535

4

50

135

462

480

11

20

12

450

457

480

685

610

39

20

560

4

57

135

500

530

12.5

20

12

500

508

530

755

670

42

20

615

4

57

140

562

580

14.2

20

12

600

610

630

890

795

48

20

735

5

72

150

666

686

16

20

12

 Dimensions of Weld Neck Flanges PN 63  EN 1092-1

DN

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

Series Ⅰ

Series Ⅱ

10

17.2

14

100

70

14

4

40

2

20

45

32

 

 

 

15

21.3

18

105

75

14

4

45

2

20

45

34

2

6

4

20

26.9

25

130

90

18

4

58

2

22

48

42

2.6

8

4

25

33.7

32

140

100

18

4

68

2

24

58

52

2.6

8

4

32

42.4

38

155

110

22

4

78

2

24

60

62

2.9

8

6

40

48.3

45

170

125

22

4

88

3

26

62

70

2.9

10

6

50

60.3

57

180

135

22

4

102

3

26

62

82

4

10

6

65

76.1

76

205

160

22

8

122

3

26

68

98

4

12

6

80

88.9

89

215

170

22

8

138

3

28

72

112

4.5

12

8

100

114.3

108

250

200

26

8

162

3

30

78

138

4.5

12

8

125

139.7

133

295

240

30

8

188

3

34

88

168

5.6

12

8

150

168.3

159

345

280

33

8

218

3

36

95

202

6.3

12

10

200

219.1

219

415

345

36

12

285

3

42

110

256

7.1

16

10

250

273

273

470

400

36

12

345

3

46

125

316

8.8

18

12

300

323.9

325

530

460

36

16

410

4

52

140

372

11

18

12

350

355.6

377

600

525

39

16

465

4

56

150

420

430

12.5

20

12

400

406.4

426

670

585

42

16

535

4

60

160

475

484

14.2

20

12

Dimensions of Weld Neck Flanges PN 100  EN 1092-1

 DN
             

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

10

17.2

14

100

70

14

4

40

2

20

45

32

2

6

4

15

21.3

18

105

75

14

4

45

2

20

45

34

3.2

6

4

20

26.9

25

130

90

18

4

58

2

22

48

42

3.2

8

4

25

33.7

32

140

100

18

4

68

2

24

58

52

3.6

8

4

32

42.4

38

155

110

22

4

78

2

24

60

62

3.6

8

6

40

48.3

45

170

125

22

4

88

3

26

62

70

3.6

10

6

50

60.3

57

195

145

26

4

102

3

28

68

90

4

10

6

65

76.1

76

220

170

26

8

122

3

30

76

108

4

12

6

80

88.9

89

230

180

26

8

138

3

32

78

120

5

12

8

100

114.3

108

265

210

30

8

162

3

36

90

150

5.6

12

8

125

139.7

133

315

250

33

8

188

3

40

105

180

6.3

12

8

150

168.3

159

355

290

33

12

218

3

44

115

210

8

12

10

200

219.1

219

430

360

36

12

285

3

52

130

278

8.8

16

10

250

273

273

505

430

39

12

345

3

60

157

340

10

18

12

300

323.9

325

585

500

42

16

410

4

68

170

400

12.5

18

12

350

355.6

377

655

560

48

16

465

4

74

189

460

14.2

20

12


Dimensions of Weld Neck Flanges PN 160  EN 1092-1

DN
             

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

Series Ⅰ

Series Ⅱ

10

17.2

14

100

70

14

4

40

2

20

45

32

2

6

4

15

21.3

18

105

75

14

4

45

2

20

45

34

2

6

4

20

26.9

25

130

90

18

4

58

2

24

52

42

2.9

6

4

25

33.7

32

140

100

18

4

68

2

24

58

52

2.9

8

4

32

42.4

38

155

110

22

4

78

2

28

60

60

3.6

8

5

40

48.3

45

170

125

22

4

88

3

28

64

70

3.6

10

6

50

60.3

57

195

145

26

4

102

3

30

75

90

4

10

6

65

76.1

76

220

170

26

8

122

3

34

82

108

5

12

6

80

88.9

89

230

180

26

8

138

3

36

86

120

6.3

12

8

100

114.3

108

265

210

30

8

162

3

40

100

150

8

12

8

125

139.7

133

315

250

33

8

188

3

44

115

180

10

14

8

150

168.3

159

355

290

33

12

218

3

50

128

210

12.5

14

10

200

219.1

219

430

360

36

12

285

3

60

140

278

16

16

10

250

273

273

515

430

42

12

345

3

68

155

340

20

18

12

300

323.9

325

585

500

42

16

410

4

78

175

400

22.2

18

12

Dimensions of Weld Neck Flanges PN 250  EN 1092-1

DN
             

  PipeOD,A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

10

17.2

125

85

18

4

40

2

24

58

44

2.6

6

4

15

21.3

130

90

18

4

45

2

26

60

48

2.6

6

4

20

26.9

135

95

18

4

58

2

28

62

54

3.2

8

4

25

33.7

150

105

22

4

68

2

28

65

60

3.6

8

4

32

42.4

165

120

22

4

78

2

32

70

72

4

8

4

40

48.3

185

135

26

4

88

3

34

80

84

5

10

6

50

60.3

200

150

26

8

102

3

38

85

95

6.3

10

6

65

76.1

230

180

26

8

122

3

42

95

124

8

12

6

80

101.6

255

200

30

8

138

3

46

102

136

11

12

8

100

127

300

235

33

8

162

3

54

120

164

14.2

14

8

125

152.4

340

275

33

12

188

3

60

140

200

16

16

8

150

177.8

390

320

36

12

218

3

68

160

240

17.5

18

10

200

244.5

485

400

42

12

285

3

82

190

305

25

25

10

250

298.5

585

490

48

16

345

3

100

215

385

32

30

12

Dimensions of Weld Neck Flanges PN 320  EN 1092-1

DN
             

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

10

17.2

125

85

18

4

40

2

24

58

44

2.6

6

4

15

21.3

130

90

18

4

45

2

26

60

48

3.2

6

4

20

26.9

145

100

22

4

58

2

30

70

58

4

8

4

25

33.7

160

115

22

4

68

2

34

78

68

5

8

4

32

42.4

175

130

26

4

78

2

36

83

80

5.6

8

4

40

48.3

195

145

26

4

88

3

38

88

92

6.3

10

6

50

60.3

210

160

26

8

102

3

42

100

106

8

10

6

65

88.9

255

200

30

8

122

3

51

120

138

11

12

6

80

101.6

275

220

30

8

138

3

55

130

156

12.5

14

8

100

133

335

265

36

8

162

3

65

145

186

16

16

8

125

168.3

380

310

36

12

188

3

75

175

230

20

20

8

150

193.7

425

350

39

12

218

3

84

195

265

25

25

10

200

244.5

525

440

42

16

285

3

103

235

345

30

30

10

250

323.9

640

540

52

16

345

3

125

300

428

40

40

12

Dimensions of Weld Neck Flanges PN 400  EN 1092-1

DN
             

Pipe OD, A

Outside Diameter, D

Diameter of Bolt Circle, K

 Diameter of Bolt Holes, L

No. of bolts

Diameter of Raised Face, d

Height of Raised Face, f1

Flange thickness, C

Length of Flange, H

Neck Diameter , N

Wall thickness, S

Length of right end, H1

Radius of Corners, r

10

17.2

125

85

18

4

40

2

28

65

48

3.6

8

4

15

26.9

145

100

22

4

45

2

30

68

56

5

8

4

20

33.7

160

115

22

4

58

2

34

80

70

6.3

10

4

25

42.4

180

130

26

4

68

2

38

90

82

7.1

10

4

32

48.3

200

145

26

4

78

2

43

100

94

8.8

12

6

40

60.3

220

165

30

4

88

3

48

110

106

10

12

6

50

76.1

235

180

30

8

102

3

52

120

120

12.5

15

6

65

101.6

290

225

33

8

122

3

64

135

158

16

18

6

80

114.3

305

240

33

8

138

3

68

150

174

17.5

20

8

100

139.7

370

295

39

8

162

3

80

175

216

22.2

25

8

125

193.7

415

340

39

12

188

3

92

200

258

30

30

8

150

219.1

475

390

42

12

218

3

105

225

302

35

35

10

200

273

585

490

48

16

285

3

130

280

388

40

40

10


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