European standard H-beams (EN 10034: Structural steel I and H sections) are categorized by series (HEA, HEB, HEM) with standardized dimensions:
- HEA (Heavy Equal Angle): Designed for moderate loads. Examples include HEA 100 (height 100mm, flange width 100mm, web thickness 5mm, flange thickness 8mm) and HEA 200 (200x200x8x12mm).
- HEB (Heavy Broad Flange): Used for heavier loads, with wider flanges than HEA. Examples: HEB 100 (100x100x6x10mm), HEB 300 (300x300x10.5x17.5mm).
- HEM (Heavy Medium Flange): For very high loads, with thicker webs and flanges. Examples: HEM 160 (160x170x12x20mm), HEM 450 (450x450x16x28mm).
All dimensions are in millimeters, with tolerances specified in EN 10034 to ensure fit in structural assemblies. HEA, HEB, and HEM series cover sizes from 100mm to 1000mm in height, catering to applications from small buildings to large bridges.