| 4.Important use |
| Nominal Diameter
(mm) |
Radius of
curvature
of the
upports(mm) |
Nominal tensile strength
-N/mm2 / 100d |
| 1570 |
1770 |
1960 |
0.60 ≤ d < 0.65
0.65 ≤ d < 0.70 |
1.75 |
14
13 |
13
12 |
12
11 |
0.70 ≤ d < 0.75
0.75 ≤ d < 0.80
0.80 ≤ d < 0.85
0.85 ≤ d < 0.90
0.90 ≤ d < 1.00 |
2.50 |
18
17
17
15
14 |
17
16
16
14
13 |
16
15
15
13
12
|
1.00 ≤ d < 1.10
1.10 ≤ d < 1.20
1.20 ≤ d < 1.30
1.30 ≤ d < 1.40
1.40 ≤ d < 1.50 |
3.75 |
19
17
15
14
13 |
18
16
14
13
12 |
17
15
16
12
11 |
1.50 ≤ d < 1.60
1.60 ≤ d < 1.70
1.70 ≤ d < 1.80
1.80 ≤ d < 1.90
1.90 ≤ d < 2.00 |
5.00 |
16
15
14
13
12 |
15
14
13
12
11 |
14
13
12
11
10 |
2.00 ≤ d < 2.10
2.10 ≤ d < 2.20
2.20 ≤ d < 2.40
2.40 ≤ d < 2.50
2.50 ≤ d < 2.60
2.60 ≤ d < 2.80
2.80 ≤ d < 3.00 |
7.50 |
17
16
15
14
13
12
11 |
16
15
14
13
12
11
10 |
15
14
13
-
-
-
- |
| 3.00 ≤ d ≤ 3.20 |
10.00 |
14 |
13 |
-- |
