Nominal Pipe Size

Outside Diameter at Bevel

Center-to-End

Center-to-Center

Back-to-Face

90-deg Elbows

180-deg Elbows

NPS

OD

A

O

K

1"

33.4

25

51

41

1-1/4"

42.2

32

64

52

1-1/2"

48.3

38

76

62

2"

60.3

51

102

81

2-1/2"

73.0

64

127

100

3"

88.9

76

152

121

3-1/2"

101.6

89

178

140

4"

114.3

102

203

159

5"

141.3

127

254

197

6"

168.3

152

305

237

8"

219.1

203

406

313

10"

273.0

254

508

391

12"

323.8

305

610

467

14"

355.6

356

711

533

16"

406.4

406

813

610

18"

457.0

457

914

686

20"

508.0

508

1016

762

22"

559.0

559

1118

838

24"

610.0

610

1219

914