Tuesday, January 4, 2022

ASME B 16.5-2003 CLASS 300

ASME B 16.5-2003 CLASS 150

ASME B 16.5-2003 CLASS 300

CLASS 300

FLANGE THICKNESS

LTB

DRILLINE DATA

CLASS 300

NOMINAL 

PIPE SIZE

FLANGE 

OUTSIDE 

DIAMETER

THICKNESS 

OF 

FLANCE 

MIN

THICKNESS 

OF 

LAP 

MIN

BOSSED

LENGTH

WELD 

NECK

LENGTH

(Refer Note.1 )

LAP JOINT

LENGTH

LONG 

WELD

NECK

LENGTH

(Refer Note.2 )

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

95

12.7

14.3

22

51

21

229

66.7

16

4

15

1/2

20

3/4

115

14.3

15.9

25

56

24

229

82.6

20

4

20

3/4

25

1

125

15.9

17.5

27

60

25

229

88.9

20

4

25

1

32

1 1/4

135

17.5

19.1

27

64

25

229

98.4

20

4

32

1 1/4

40

1 1/2

155

19.1

20.7

30

67

29

229

114.3

23

4

40

1 1/2

50

2

165

20.7

22.3

33

68

32

229

127

20

8

50

2

65

2 1/2

190

23.9

25.5

38

75

37

229

149.2

23

8

65

2 1/2

80

3

210

27

28.6

43

78

41

229

168.3

23

8

80

3

90

3 1/2

230

28.6

30.2

44

79

43

229

184.2

23

8

90

3 1/2

100

4

255

30.2

31.8

48

84

46

229

200

23

8

100

4

125

5

280

33.4

35

49

97

49

305

235

23

8

125

5

150

6

320

35

36.6

51

97

51

305

269.9

23

12

150

6

200

8

380

39.7

41.3

60

110

60

305

330.2

26

12

200

8

250

10

445

46.1

47.7

65

116

95

305

387.4

29

16

250

10

300

12

520

49.3

50.9

73

129

102

305

450.8

32

16

300

12

350

14

585

52.4

54

76

141

111

305

514.4

32

20

350

14

400

16

650

55.6

57.2

82

144

121

305

571.5

35

20

400

16

450

18

710

58.8

60.4

88

157

130

305

628.6

35

24

450

18

500

20

775

62

63.6

95

160

140

305

685.8

35

24

500

20

600

24

915

68.3

69.9

106

167

152

305

812.8

42

24

600

24

NOTES: *Schedule of weld neck to be indicated.

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