**Differences**
- Equal‑leg angle steel has two equal sides (e.g. ∠50×50×5, 40×40×4), sizes No.2–No.20. It features symmetrical stress distribution, commonly used for bridges, transmission towers, warehouse racks and other symmetric load‑bearing structures.
- Unequal‑leg angle steel has sides of different widths (e.g. ∠100×80×8), specifications from ∟50×32 to ∟200×125. Its asymmetric profile suits constrained spaces and uneven loads, applied for factory beams, furnaces, reaction towers and container racks. Lower demand makes its price higher.

**Similarities**
- Base materials: Q235B, Q345B.
- Standard lengths: 6 m, 9 m, 12 m.
- Same weight formula: Weight per meter = 0.00785 × (side1 + side2 − thickness) × thickness.