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Flange

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PN6 Plate flat welded steel pipe flange  (mm)

DN

Steel pipe outer diameter

A1

Connection size

Flange thickness

C

Flange inner diameter B1

A

B

Flange outer diameter D

Bolt hole center circle diameter K

Bolt hole diameter L

Number of bolt holes n (pcs)

Bolt Th

A

B

10

17.2

14

75

50

11

4

M10

12

18

15

15

21.3

18

80

55

11

4

M10

12

22.5

19

20

26.9

25

90

65

11

4

M10

14

27.5

26

25

33.7

32

100

75

11

4

M10

14

34.5

33

32

42.4

38

120

90

14

4

M12

16

43.5

39

40

48.3

45

130

100

14

4

M12

16

49.5

46

50

60.3

57

140

110

14

4

M12

16

61.5

59

65

76.1

76

160

130

14

4

M12

16

77.5

78

80

88.9

89

190

150

18

4

M16

18

90.5

91

100

114.3

108

210

170

18

4

M16

18

116

110

125

139.7

133

240

200

18

8

M16

20

143.5

135

150

168.3

159

265

225

18

8

M16

20

170.5

161

200

219.1

219

320

280

18

8

M16

22

221.5

222

250

273

273

375

335

18

12

M16

24

276.5

276

300

323.9

325

440

395

22

12

M20

24

328

328

350

355.6

377

490

445

22

12

M20

26

360

381

400

406.4

426

540

495

22

16

M20

28

411

430

450

457

480

595

550

22

16

M20

30

462

485

500

508

530

645

600

22

20

M20

30

513.5

535

600

610

630

755

705

26

20

M24

32

616.5

636

PN10 Plate flat welded steel pipe flange (mm)

DN

Steel pipe outer diameter

A1

Connection size

Flange thickness

C

Flange inner diameter B1

A

B

Flange outer diameter D

Bolt hole center circle diameter K

Bolt hole diameter L

Number of bolt holes n (pcs)

Bolt Th

A

B

10

17.2

14

90

60

14

4

M12

14

18

15

15

21.3

18

95

65

14

4

M12

14

22.5

19

20

26.9

25

105

75

14

4

M12

16

27.5

26

25

33.7

32

115

85

14

4

M12

16

34.5

33

32

42.4

38

140

100

18

4

M16

18

43.5

39

40

48.3

45

150

110

18

4

M16

18

49.5

46

50

60.3

57

165

125

18

4

M16

19

61.5

59

65

76.1

76

185

145

18

8

M16

20

77.5

78

80

88.9

89

200

160

18

8

M16

20

90.5

91

100

114.3

108

220

180

18

8

M16

22

116

110

125

139.7

133

250

210

18

8

M16

22

143.5

135

150

168.3

159

285

240

22

8

M20

24

170.5

161

200

219.1

219

340

295

22

8

M20

24

221.5

222

250

273

273

396

350

22

12

M20

26

276.5

276

300

323.9

325

445

400

22

12

M20

26

328

328

350

355.6

377

505

460

22

16

M20

28

360

381

400

406.4

426

565

515

26

16

M24

32

411

430

450

457

480

615

565

26

20

M24

36

462

485

500

508

530

70

620

26

20

M24

38

513.5

535

600

610

630

780

725

30

20

M27

42

616.5

636

PN16 Plate flat welded steel pipe flange (mm)

DN

Steel pipe outer diameter

A1

Connection size

Flange thickness

C

Flange inner diameter B1

 

Groove width

b

A

B

Flange outer diameter D

Bolt hole center circle diameter K

Bolt hole diameter L

Number of bolt holes n (pcs)

Bolt Th

A

B

10

17.2

14

90

60

14

4

M12

14

18

15

4

15

21.3

18

95

65

14

4

M12

14

22.5

19

4

20

26.9

25

105

75

14

4

M12

16

27.5

26

4

25

33.7

32

115

85

14

4

M12

16

34.5

33

5

32

42.4

38

140

100

18

4

M16

18

43.5

39

5

40

48.3

45

150

110

18

4

M16

18

49.5

46

5

50

60.3

57

165

125

18

4

M16

19

61.5

59

5

65

76.1

76

185

145

18

8

M16

20

77.5

78

6

80

88.9

89

200

160

18

8

M16

20

90.5

91

6

100

114.3

108

220

180

18

8

M16

22

116

110

6

125

139.7

133

250

210

18

8

M16

22

143.5

135

6

150

168.3

159

285

240

22

8

M20

24

170.5

161

6

200

219.1

219

340

295

22

12

M20

26

221.5

222

8

250

273

273

405

355

26

12

M24

29

276.5

276

10

300

323.9

325

460

410

26

12

M24

32

328

328

11