Rolling Tolerances to EN 10219-2:1997 for cold formed Circular Hollow Sections

Designation Property   Tolerance  
Outside diameter D ±1.0% with a min of ±0.5 mm and a max of ±10 mm
Thickness t D ≤ 406.4 mm t ≤ 5 mm ±10%
D ≤ 406.4 mm t > 5 mm ±0.5%
D > 406.4 mm ±10 mm with a maximum of 2 mm
Measured at the centre of the length Straightness (x or y direction) 0.20% L
Mass per unit length Mass of section ±6% on individual lengths
Standard Length L +50 mm –0 mm