BS EN 10210-3. Hot finished structural steel hollow sections. Part 3. Tolerances,
Dimensions & sectional properties Hollow sections, Metal sections, Steels, Unalloyed steels, Structural steels, Hot-working, Heat-treatable steels, Welding, Dimensional tolerances, Form tolerances,
Dimensions, Circular shape, Square shape, Rectangular shape, Elliptical shape, Ordering, Length, Diameter, Thickness, Area, Mass, Weight tolerances, Mathematical calculations