This document specifies tolerances for hot finished circular, square, rectangular and elliptical structural hollow sections, manufactured in wall thicknesses up to 120 mm, in the following size ranges: - Circular: Outside diameters up to 2 500 mm; - Square: Outside dimensions up to 800 mm × 800 mm; - Rectangular: Outside dimensions up to 750 mm × 500 mm; - Elliptical: Outside dimensions up to 500 mm × 250 mm.