EMCO Enterprises Automobile Parts 5707070-A Benutzerhandbuch
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Table 4-6. Ductile iron pipe standard classes (inside diameters)
Size
Inches
Outside
Diameter
Class
50
Class
51
Class
52
Class
53
Class
54
Class
55
Class
56
Cement Lining
Note 1
Standard
Thickness
Double
Thickness
3
3.96
3.46
3.40
3.34
3.28
3.22
3.16
4
4.80
4.28
4.22
4.16
4.10
4.04
3.98
6
6.90
6.40
6.34
6.28
6.22
6.16
6.10
6.04
0.125
0.250
8
9.05
8.51
8.45
8.39
8.33
8.27
8.21
8.15
10
11.10
10.52
10.46
10.40
10.34
10.28
10.22
10.16
12
13.20
12.58
12.52
12.46
12.40
12.34
12.28
12.22
14
15.30
14.64
14.58
14.52
14.46
14.40
14.34
14.28
16
17.40
16.72
16.66
16.60
16.54
16.48
16.42
16.36
18
19.50
18.80
18.74
18.68
18.62
18.56
18.50
18.44
0.1875
0.375
20
21.60
20.88
20.82
20.76
20.70
20.64
20.58
20.52
24
25.80
25.04
24.98
24.92
24.86
24.80
24.74
24.68
30
32.00
31.22
31.14
31.06
30.98
30.90
30.82
30.74
36
38.30
37.44
37.34
37.06
37.14
37.04
36.94
36.84
42
44.50
43.56
43.44
43.32
43.20
43.08
42.96
42.84
0.250
0.500
48
50.80
49.78
49.64
49.50
49.36
49.22
49.08
48.94
54
57.10
55.96
55.80
55.64
55.48
55.32
55.16
55.00
Note 1
Reduce I.D. by dimension shown; these figures also apply to C.I. pipe