‌1. Basic Classification‌
‌Equal Angle Steel‌: Two legs of equal length (e.g., ∠50×50×5 indicates leg width 50mm, thickness 5mm).
‌Unequal Angle Steel‌: Two legs of different lengths (e.g., ∠100×63×8 indicates long leg 100mm, short leg 63mm, thickness 8mm).
‌2. Specification Notation‌
‌Standard Format‌: ∠ Leg Width × Leg Width × Thickness (mm), e.g., ∠30×30×3.
‌International Standards‌: Some regions use "Leg Width × Thickness" (e.g., 30×3), subject to local standards verification.
‌3. Material & Standards‌
‌Common Materials‌: Q235 (carbon structural steel), Q355 (high-strength low-alloy steel), stainless steel.
‌Standards‌:
China: GB/T 706-2016 Hot-rolled section steels
International: ASTM A36 (USA), EN 10025 (Europe).
‌4. Primary Applications‌
‌Construction‌: Building frames, supports, connectors.
‌Machinery‌: Equipment brackets, conveyor rails.
‌Power/Telecom‌: Transmission towers, antenna masts.
‌Others‌: Reinforcement in ships/vehicles.
‌5. Characteristics‌
‌Advantages‌: High strength, weldability, cost-effectiveness, easy installation.
‌Limitations‌: Low torsional resistance due to cross-section; often used with other sections.
‌6. Selection Guidelines‌
‌Requirements‌: Choose material based on load capacity/corrosion environment (e.g., stainless for corrosion resistance).
‌Quality Check‌: Surface must be free of cracks/folds; dimensions within standard tolerances.
‌Compliance‌: Prioritize nationally/internationally certified products.
‌7. Key Terms‌
‌Theoretical Weight‌: Weight per meter (e.g., ∠50×50×5 ≈ 3.77kg/m).
‌Length‌: Standard: 6m, 9m, 12m; customizable.
For further details (e.g., specific technical parameters, international standard comparisons), specify your requirements.