H Beam Steel HEA280 HEB280 S275JR/S355JR
HEA280 steel beam Application scenarios: Lightweight frames (e.g. secondary beams in low-rise buildings); non-critical supports (e.g. platforms, auxiliary structures).
HEB280 universal beam Application scenarios: Heavy-duty structures (e.g. main beams in high-rise buildings, crane girders); critical components (e.g. bridge piers, heavy machinery bases).
Dimensional Parameters
| Parameter | HEA280 | HEB280 |
|---|---|---|
| Section Height (H) | 270 mm (narrow flange series) | 280 mm (medium flange series) |
| Flange Width (B) | 280 mm | 280 mm |
| Web Thickness (t₁) | 8 mm | 10.5 mm |
| Flange Thickness (t₂) | 13 mm | 18 mm |
| Weight | ~76.4 kg/m | ~103 kg/m |
Structural Characteristics
| Feature | HEA280 | HEB280 |
|---|---|---|
| Bending Resistance | Suitable for small/medium spans (≤8 m) | Designed for heavy loads or large spans (≥10 m) |
| Compressive Strength | Thinner web requires stiffeners to prevent buckling | Thicker web provides inherent stability |
| Machinability | Easier to cut/weld (thin-walled) | Requires heavy-duty equipment (thick-walled) |
Structural characteristics and applicable scenarios
HEA280: Narrow flange design, thin web and flange, suitable for light loads or scenarios with strict restrictions on section height (such as light frames, auxiliary supports).
HEB280: Medium flange design, with larger section height and flange/web thickness, stronger bending and compression resistance, suitable for heavy-load structures (such as high-rise building main beams, heavy equipment bases).
