ASME B 16.5-2003 CLASS 1500

FLANGE 
THICKNESS

LTB

DRILLINE DATA

CLASS 1500

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

267

48

124

73

229

203.2

32

8

80

3

311

54

131

90

229

241.3

35

8

100

4

375

73.5

163

105

305

292.1

42

8

125

5

394

83

178

119

305

317.5

38

12

150

6

483

92

220

143

305

393.7

45

12

200

8

585

108

261

178

305

482.6

51

12

250

10

675

124

290

219

305

571.5

54

16

300

12

750

133.5

305

241

305

635.0

60

16

350

14

825

146.5

318

260

311

704.8

67

16

400

16

915

162

334

276

327

774.7

73

16

450

18

985

178

363

292

356

831.8

79

16

500

20

1170

203.5

413

330

406

990.6

92

16

600

24

NOTES:*Schedule of weld neck to be indicated.