Ductile Iron Pipe
Standard Classes
Pipe
Size
(inches)
Outside
Diameter
(inches)
Class 50
Class 51
Class 52
Class 53
Class 54
Class 55
Class 56
CementLining
Std./Double
Thickness
ID Wall
ID Wall
ID Wall
ID Wall
ID Wall
ID Wall
ID Wall
3
4
6
8
10
12
3.96
4.80
6.90
9.05
11.10
13.20
6.40 0.25
8.51 0.27
10.32 0.39
12.58 0.31
3.46 0.25
4.28 0.26
6.34 0.28
8.45 0.30
10.46 0.32
12.52 0.34
3.40 0.28
4.22 0.29
6.28 0.31
8.39 0.33
10.40 0.35
12.46 0.37
3.34 0.31
4.16 0.32
6.22 0.34
8.33 0.36
10.34 0.38
12.40 0.40
3.28 0.34
4.10 0.35
6.16 0.37
8.27 0.39
10.28 0.41
12.34 0.43
3.22 0.37
4.04 0.38
6.10 0.40
8.21 0.42
10.22 0.44
12.28 0.46
3.14 0.41
3.93 0.44
6.04 0.43
8.15 0.45
10.16 0.47
12.22 0.49
.123/.250
14
16
18
20
24
15.30
17.40
19.50
21.60
25.80
14.64 0.33
16.72 0.34
18.80 0.35
20.88 0.36
25.04 0.38
14.58 0.36
16.66 0.37
18.74 0.38
20.82 0.39
24.98 0.41
14.52 0.39
16.60 0.40
18.68 0.41
20.76 0.42
24.92 0.44
14.46 0.42
16.54 0.43
18.62 0.44
20.70 0.45
24.86 0.47
14.40 0.45
16.48 0.46
18.56 0.47
20.64 0.48
24.80 0.50
14.34 0.48
16.42 0.49
18.50 0.50
20.58 0.51
24.74 0.53
14.28 0.51
16.36 0.52
18.44 0.53
20.52 0.54
24.68 0.56
.1875/.375
30
36
42
48
54
32.00
38.30
44.50
50.80
57.10
31.22 0.39
37.44 0.43
43.56 0.47
49.78 0.51
55.96 0.57
31.14 0.43
37.34 0.48
43.44 0.53
49.64 0.58
55.80 0.65
31.06 0.47
37.06 0.62
43.32 0.59
49.50 0.65
55.64 0.73
30.98 0.51
37.14 0.58
43.20 0.65
49.36 0.72
55.48 0.81
30.90 0.55
37.40 0.45
43.08 0.71
49.22 0.79
55.32 0.89
30.82 0.59
36.94 0.68
42.96 0.77
49.08 0.86
55.16 0.97
30.74 0.63
36.84 0.73
42.84 0.83
48.94 0.93
55.00 1.05
.250/.500