
IM-P505-02-US
Issue 1
104
UTM20 Series Ultrasonic Transit-time Flowmeters
15. North American Pipe Schedules
Table 8: Cast iron pipe, standard classes, 3 to 10 inch
Size in.
Class
in.
A
B
C
D
E
F
G
H
3
OD
3.80
3.96
3.96
3.96
-
Wall
0.39
0.42
0.45
0.48
ID
3.02
3.12
3.06
3.00
4
OD
4.80
5.00
5.00
5.00
Wall
0.42
0.45
0.48
0.52
ID
3.96
4.10
4.04
3.96
6
OD
6.90
7.10
7.10
7.10
7.22
7.22
7.38
7.38
Wall
0.44
0.48
0.51
0.55
0.58
0.61
0.65
0.69
ID
6.02
6.14
6.08
6.00
6.06
6.00
6.08
6.00
8
OD
9.05
9.05
9.30
9.30
9.42
9.42
9.60
9.60
Wall
0.46
0.51
0.56
0.60
0.66
0.66
0.75
0.80
ID
8.13
8.03
8.18
8.10
8.10
8.10
8.10
8.00
10
OD
11.10
11.10
11.40
11.40
11.60
11.60
11.84
11.84
Wail
0.50
0.57
0.62
0.68
0.74
0.80
0.86
0.92
ID
10.10
9.96
10.16
10.04
10.12
10.00
10.12
10.00
Table 9: Steel, stainless steel, PVC pipe, standard classes
NPS
OD
SCH 60
X STG.
SCH 80
SCH 100
SCH 120/140
SCH 180
in.
in.
ID
in.
Wall
in.
ID
in.
Wall
in.
ID
in.
Wall
in.
ID
in.
Wall
in.
ID
in.
Wall
in.
ID
in.
Wall
in.
1
1.315
-
0.957 0.179 0.957 0.179
-
—
0.815 0.250
1.25
1.660
1.278 0.191 1.278 0.191
1.160 0.250
1.5
1.900
1.500 0.200 1.500 0.200
1.338 0.281
2
2.375
1.939 0.218 1.939 0.218
1.687 0.344
2.5
2.875
2.323 0.276 2.323 0.276
2.125 0.375
3
3.500
2.900 0.300 2.900 0.300
2.624 0.438
3.5
4.000
3.364 0.318 3.364 0.318
-
4
4.500
3.826 0.337 3.826 0.337
3.624 0.438 3.438 0.531
5
5.563
4.813 0.375 4.813 0.375
4.563 0.500 4.313 0.625
6
6.625
5.761 0.432 5.761 0.432
5.501 0.562 5.187 0.719
8
8.625 7.813 0.406 7.625 0.500 7.625 0.500 7.437 0.594 7.178 0.719 6.183 1.221
10
10.75 9.750 0.500
9.75
0.500 9.562 0.594 9.312 0.719 9.062 0.844 8.500 1.125