POLYSONICS DCT-7088 - Page 115

7088-8000
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Table B-3
Ductile Iron Pipe Standard Classes
Inside Diameter (ID) and Outside Diameter (OD) in Inches
Inside diameter
Cement lining
1
m
inal
e
Size
Outside
Diameter (OD) Class 50 Class 51 Class 52 Class 53 Class 54 Class 55 Class 56
Standard
Thickness
Double
Thicknes
3.96
4.80
6.90
9.05
11.10
13.20
6.40
8.51
10.52
12.58
3.46
4.28
6.34
8.45
10.46
12.52
3.40
4.22
6.28
8.39
10.40
12.46
3.34
4.16
6.22
8.33
10.34
12.40
3.28
4.10
6.16
8.27
10.28
12.34
3.22
4.04
6.10
8.21
10.22
12.28
3.16
3.98
6.04
8.15
10.16
12.22
0.125 0.250
15.30
17.40
19.50
21.60
25.80
14.64
16.72
18.80
20.88
25.04
14.58
16.66
18.74
20.82
24.98
14.52
16.60
18.68
20.76
24.92
14.46
16.54
18.62
20.70
24.86
14.40
16.48
18.56
20.64
24.80
14.34
16.42
18.50
20.58
24.74
14.28
16.36
18.44
20.52
24.68
0.1875 0.375
32.00
38.30
44.50
50.80
57.10
31.22
37.44
43.56
49.78
55.96
31.14
37.34
43.44
49.64
55.80
31.06
37.06
43.32
49.50
55.64
30.98
37.14
43.20
49.36
55.48
30.90
37.04
43.08
49.22
55.32
30.82
36.94
42.96
49.08
55.16
30.74
36.84
42.84
48.94
55.00
0.250 0.500
r pipes with cement linings, reduce the pipe inside diameter by two times the lining thickness listed above.