Large Diametrer Forged Steel Flanges

NPS

DN

Flange Outside Diameter

Flange Thickness
C

Bore
B

Length Thru Hub
Y

Diameter of Hub
At Base X

NO. of Holes

Diam of bolt circle
K

Diam of Holes

Approx weight(kg)

O

Class
B & D

Class
E

Class
B & D

Class
E

Class
B

Class
E

Class
B

Class
D & E

Class
B & D

Class
E

6"

11

0.56

1

/

1.25

1.56

7.56

7.56

8

9.5

0.75

0.88

14

19

150

280

14.3

25.4

/

31.8

39.7

192.1

192.1

8

241.3

20

23

6.3

9

8"

13.5

0.56

1.12

/

1.25

1.75

9.69

9.69

8

11.75

0.75

0.88

18

32

200

343

14.3

28.4

/

31.8

44.5

246.1

246.1

8

298.5

20

23

8

14.5

10"

16

0.69

1.19

/

1.25

1.94

12

12

12

14.25

0.75

1

27

42

250

407

17.5

30.2

As

31.8

49.2

304.8

304.8

12

362

20

26

12

19

12"

19

0.69

1.25

/

1.25

2.19

14.38

14.38

12

17

0.75

1

41

65

300

483

17.5

31.8

Specified

31.8

55.6

365.1

365.1

12

431.8

20

26

18.5

29

14"

21

0.75

1.38

/

1.25

2.25

15.75

15.75

12

18.75

0.88

1.12

45

86

350

534

19.1

34.9

By

31.8

57.2

400.1

400.1

12

476.3

23

29

20

39

16"

23.5

0.75

1.44

/

1.25

2.5

18

18

16

21.25

0.88

1.12

57

92

400

597

19.1

36.5

Purchaser

31.8

63.5

457.2

457.2

16

559.8

23

29

25.5

42

18"

25

0.75

1.56

/

1.25

2.69

19.88

19.88

16

22.75

0.88

1.25

59

118

450

635

19.1

39.7

/

31.8

68.3

504.8

504.8

16

577.9

23

32

26.5

53

20"

27.5

0.75

1.69

/

1.25

2.88

22

22

20

25

0.88

1.25

68

153

500

699

19.1

42.9

/

31.8

73

558.8

558.8

20

635

23

32

31

69

22"

29.5

1

1.81

/

1.75

3.12

24.25

24.25

20

27.25

0.88

1.38

75

177

550

750

25.4

46

/

44.5

79.4

616

616

20

692.2

23

35

34

80

24"

32

1

1.88

/

1.75

3.25

26.13

26.13

20

29.5

0.88

1.38

117

212

600

813

25.4

47.8

/

44.5

82.6

663.6

663.6

20

749.3

23

35

53

96

26"

34.25

1

2

/

1.75

3.38

28.5

28.5

24

31.75

0.88

1.38

126

235

650

870

25.4

50.8

/

44.5

85.9

723.9

723.9

24

806.5

23

35

57

106

28"

36.5

1

2.06

/

1.75

3.44

30.5

30.75

28

34

0.88

1.38

139

273

700

927

25.4

52.4

/

44.5

87.3

774.7

781.1

28

863.6

23

35

63

123

30"

38.75

1

2.12

/

1.75

3.5

32.5

32.75

28

36

1

1.38

152

310

750

985

25.4

54

/

44.5

88.9

825.5

831.9

28

914.4

26

35

68

140

32"

41.75

1.12

2.25

/

1.75

3.62

34.75

35

28

38.5

1

1.62

208

373

800

1061

28.6

57.2

/

44.5

92.1

882.7

889

28

977

26

42

94

169

34"

43.75

1.12

2.31

/

1.75

3.69

36.75

37

32

40.5

1

1.62

220

405

1112

28.6

58.7

/

44.5

93.7

933.5

939.8

32

1029

26

42

99

183

36"

46

1.12

2.38

/

1.75

3.75

38.75

39.25

32

42.75

1

1.62

235

460

900

1169

28.6

60.3

/

44.5

95.3

984.3

997

32

1086

26

42

106

207

38"

48.75

1.12

2.38

/

1.75

3.75

40.75

41.75

32

45.25

1

1.62

270

525

1239

28.6

60.3

/

44.5

95.3

1035

1061

32

1149

26

42

122

237

40"

50.75

1.12

2.5

/

1.75

3.88

43

43.75

36

47.25

1

1.62

281

575

###

1289

28.6

63.5

/

44.5

98.4

1092

1111

36

1200

26

42

127

259

42"

53

1.25

2.62

/

1.75

4

45

46

36

49.5

1.12

1.62

327

660

1347

31.8

66.7

/

44.5

101.6

1143

1168

36

1257

29

42

147

297

44"

55.25

1.25

2.62

/

2.25

4

47

48

40

51.75

1.12

1.62

355

695

###

1404

31.8

66.7

/

57.2

101.6

1194

1219

40

1315

29

42

160

313

46"

57.25

1.25

2.69

/

2.25

4.06

49

50

40

53.75

1.12

1.62

370

725

1455

31.8

68.3

/

57.2

103.2

1245

1270

40

1365

29

42

167

327

48"

59.5

1.38

2.75

/

2.5

4.12

51

52.25

44

56

1.12

1.62

420

800

###

1512

34.9

69.9

/

63.5

104.8

1295

1327

44

1422

29

42

189

360

50"

61.75

1.38

2.75

/

2.5

4.12

53

54.25

44

58.25

1.25

1.88

445

825

1569

34.9

69.9

/

63.5

104.8

1346

1378

44

1480

32

48

201

372

52"

64

1.38

2.86

/

2.5

4.25

55

56.5

44

60.5

1.25

1.88

480

925

###

1626

34.9

73

/

63.5

108

1397

1435

44

1537

32

48

216

417

54"

66.25

1.38

3

/

2.5

4.38

57

58.75

44

62.75

1.38

1.88

510

1030

###

1683

34.9

76.2

/

63.5

111.1

1448

1492

44

1594

35

48

230

464

60"

73

1.5

3.12

/

2.75

4.5

63

65.25

52

69.25

1.38

1.88

645

1275

###

1855

38.1

79.4

/

69.9

114.3

1600

1657

52

1759

35

48

291

574

66"

80

1.5

3.38

/

2.75

4.88

69

71.5

52

76

1.38

1.88

760

1625

2032

38.1

85.7

/

69.9

123.8

1753

1816

52

1930

35

48

342

732

72"

86.5

1.5

3.5

/

2.75

5

75

78.5

60

82.5

1.38

1.88

855

1950

###

2197

38.1

88.9

/

69.9

127

1905

1994

60

2096

35

48

385

878

84"

99.75

1.75

3.89

/

3

5.38

87.5

90.5

64

95.5

1.62

2.12

1240

2600

###

2534

44.4

98.4

/

76.2

136.5

2223

2299

64

2426

42

54

558

1170

96"

113.3

2

4.25

/

3.25

5.75

100

102.8

68

108.5

1.88

2.38

1730

3436

###

2877

50.8

108

/

82.6

146.1

2540

2610

68

2756

48

61

779

1560