Rolling tolerances to BS EN 10219-2: 2006 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