Inside Diam. (in.)
IN 10 _____GS or SS
Min
Wt. Bend
Per Ft. Radius
(lbs.) (in.)
IN 15 _____GS or SS
Min.
IN 18 _____GS or SS
IN 25 _____GS or SS
Per Ft Radius
IN 30 _____GS Only
IN 20_____AL Only
1 1/2
0.5
6
0.7
7
0.9
1.3
8
2
1.0
9
1.1
1.7
10
2.0
11
2 1/2
0.8
1.2
1.4
2.1
12
2.5
13
3
1.6
15
2.9
3 1/2
14
1.9
2.8
17
3.4
18
4
1.8
16
2.2
3.2
19
3.8
20
4 1/2
2.4
3.6
21
4.3
22
5
1.5
2.7
4.0
24
4.7
25
28
5.6
29
3.1
3.7
30
5.5
33
6.5
34
3.5
32
4.2
6.2
37
7.4
39
3.9
35
38
7.0
42
8.3
43
4.4
5.2
7.7
46
9.2
48
5.7
8.5
51
10.1
53
50
9.3
55
11.0
57
2.6
6.7
54
10.0
60
11.9
62
7.2
58
10.8
64
12.8
67
3.0
11.5
69
13.7
71
8.2
66
12.3
73
14.6
76