Do I need extra material for rolling?

In certain cases we can curve section and plate from the exact length.
You will need to consider the following:

Width of section
25mm wide
30mm wide
40mm wide
50mm wide
60mm wide
75mm wide
100mm wide
125mm wide
150mm wide
178mm wide
203mm wide
254mm wide
305mm wide
356mm wide
406mm wide
Allowance per bar
200 mm per bar
250 mm per bar
300 mm per bar
350 mm per bar
450mm per bar
450mm per bar
500mm per bar
600mm per bar
650mm per bar
1000mm per bar
1000mm per bar
1500mm per bar
1500mm per bar
2000mm per bar
2500mm per bar


If the section is curved to a radius 100 times the section width or over
you will not need extra material as the straight end will not be
noticeable.