Rolling Tolerances to EN 10219-2:2006 for cold formed Square and Rectangular Hollow Sections

Designation Property   Tolerance  
Depth or width D or B D, B < 100 ±1.0% with a minimum of ±0.5 mm
100 ≤ D, B ≤ 200 ±0.8%
200 < D, B  ±0.6%
Thickness t t ≤ 5 mm ±10%
5 mm < t  ±0.5 mm
Squareness of side 90º ±1º
External corner profile t ≤ 6 1.6t to 2.4t
6 < t ≤ 10 2.0t to 3.0t
10 < t  2.4t to 3.6t
Concavity / convexity x ±0.8% with a minimum of 0.5 mm

Section is placed on a flat surface with one end held flat. At the other end the height difference of the two lower corners is taken

Twist v 2 mm plus 0.5 mm per m max
Measured at the centre of the length Straightness (x or y direction) 0.15% L
Mass per unit length Mass of section ±6.0% on individual lengths
Standard Length L +50 mm –0 mm