ASME B 16.5-2003 CLASS 900

FLANGE 
THICKNESS

LTB

DRILLINE DATA

CLASS 900

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

121

22.5

39.0

67

32

229

82.6

22

4

15

1/2

130

25.5

42.0

77

35

229

88.9

22

4

20

3/4

149

29

48.0

80

41

229

101.6

26

4

25

1

159

29

48.0

80

41

229

111.1

26

4

32

1 1/4

178

32

51.0

90

44

229

123.8

29

4

40

1 1/2

216

38.5

64.0

109

57

229

165.1

26

8

50

2

244

41.5

71.0

112

64

229

190.5

29

8

65

2 1/2

240

38

61.0

109

54

229

190.5

26

8

80

3

290

45

77.0

121

70

229

235.0

32

8

100

4

350

50.8

86.0

134

79

305

279.4

35

8

125

5

380

56

93.0

147

86

305

317.5

32

12

150

6

470

64

109.0

169

114

305

393.7

38

12

200

8

545

70

115.0

191

127

305

469.9

38

16

250

10

610

79

124.0

207

143

305

533.4

38

20

300

12

640

85.8

137.0

220

156

305

558.8

42

20

350

14

705

88.9

140.0

223

165

305

616.0

45

20

400

16

785

102

159.0

236

190

305

685.8

51

20

450

18

855

108

166.0

255

210

305

749.3

54

20

500

20

1040

139.7

210.0

299

267

305

901.7

67

20

600

24

NOTES:*Schedule of weld neck to be indicated.