BS EN 10210-2. Hot finished structural steel hollow sections. Part 2. Technical delivery conditions Hollow sections, Metal sections, Steels, Unalloyed steels, Structural steels, Hot-working, Heat-treatable steels, Welding, Square shape, Rectangular shape, Circular shape, Classification systems, Designations, Chemical composition, Grain size, Mechanical properties of materials, Inspection, Sampling methods, Test methods, Marking, Conformity, Test specimens