ASME B 16.5-2003 CLASS 150

CLASS 150

FLANGE THICKNESS

LTB

DRILLINE DATA

CLASS 150

NOMINAL 
PIPE SIZE

FLANGE 
OUTSIDE 
DIAMETER

THICKNESS 
OF 
FLANCE 
MIN

THICKNESS 
OF 
LAP 
MIN

BOSSED
LENGTH

WELD 
NECK
LENGTH
*

LAP JOINT
LENGTH

LONG 
WELD
NECK
LENGTH

PITCH
CIRCLE
DIAMETER

BOLT
HOLE
DIAMETER

NUMBER
OF
BOLT
HOLES

NOMINAL 
PIPE SIZE

MM

INCH

OD

T

T1

L

L1

L2

L3

PCD

H

#

MM

INCH

15

1/2

90

9.6

11.2

16

46

16

229

60.3

16

4

15

1/2

20

3/4

100

11.2

12.8

16

51

16

229

69.9

16

4

20

3/4

25

1

110

12.7

14.3

18

54

18

229

79.4

16

4

25

1

32

1 1/4

115

14.3

15.9

21

56

21

229

88.9

16

4

32

1 1/4

40

1 1/2

125

15.9

17.5

22

60

23

229

98.4

16

4

40

1 1/2

50

2

150

17.5

19.1

25

62

26

229

120.7

20

4

50

2

65

2 1/2

180

20.7

22.3

29

68

29

229

139.7

20

4

65

2 1/2

80

3

190

22.3

23.9

30

68

31

229

152.4

20

4

80

3

90

3 1/2

215

22.3

23.9

32

70

32

229

177.8

20

8

90

3 1/2

100

4

230

22.3

23.9

33

75

34

229

190.5

20

8

100

4

125

5

255

22.3

23.9

36

87

37

305

215.9

23

8

125

5

150

6

280

23.9

25.5

40

87

40

305

241.3

23

8

150

6

200

8

345

27

28.6

44

100

45

305

298.5

23

8

200

8

250

10

405

28.6

30.2

49

100

50

305

362

26

12

250

10

300

12

485

30.2

31.8

56

113

56

305

431.8

26

12

300

12

350

14

535

33.4

35

58

125

79

305

476.3

29

12

350

14

400

16

595

35

36.6

64

125

87

305

539.8

29

16

400

16

450

18

635

38.1

39.7

69

138

97

305

577.9

32

16

450

18

500

20

700

41.3

42.9

73

143

103

305

635

32

20

500

20

600

24

815

46.1

47.7

82

151

111

305

749.3

35

20

600

24

NOTES: *Schedule of weld neck to be indicated.