ASME B 16.5-2003 CLASS 600

FLANGE 
THICKNESS

LTB

DRILLINE DATA

CLASS 600

FLANGE 
OUTSIDE 
DIAMETER

THICKNESS 
OF 
FLANCE 
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

OD

T & T1

L

L1

L2

L3

PCD

H

#

MM

INCH

95

14.3

29

59

22

229

66.7

16

4

15

1/2

115

15.9

32

64

25

229

82.6

20

4

20

3/4

125

17.5

34

69

27

229

88.9

20

4

25

1

135

20.7

36

74

29

229

98.4

20

4

32

1 1/4

155

22.3

39

77

32

229

114.3

22

4

40

1 1/2

165

25.4

44

80

37

229

127

20

8

50

2

190

28.6

48

86

41

229

149.2

22

8

65

2 1/2

210

31.8

53

90

46

229

168.3

22

8

80

3

230

35

56

93

49

229

184.2

26

8

90

3 1/2

275

38.1

61

109

54

229

215.9

26

8

100

4

330

44.5

67

121

60

305

266.7

29

8

125

5

355

47.7

74

124

67

305

292.1

29

12

150

6

420

55.6

83

140

76

305

349.2

32

12

200

8

510

63.5

93

159

111

305

431.8

35

16

250

10

560

66.7

99

163

117

305

489

35

20

300

12

605

69.9

101

172

127

305

527

38

20

350

14

685

76.2

113

185

140

305

603.2

42

20

400

16

745

82.6

124

191

152

305

654

45

20

450

18

815

88.9

134

197

165

305

723.9

45

24

500

20

940

101.6

147

210

184

305

838.2

51

24

600

24

NOTES:*Schedule of weld neck to be indicated.