What are the application industries of angle iron

Source：www.nageol.com Release date： 2025年06月23日

Information summary：Angle iron (angle steel) is a type of steel with a right angle cross-section. Due to its simple structure, high strength, easy processing, and low cost, it is widely used in structural support, connection, and protection scenarios in multiple industries. The following is a detailed analysis of its main application industries and specific scenarios:

Angle iron (angle steel) is a type of steel with a right angle cross-section. Due to its simple structure, high strength, easy processing, and low cost, it is widely used in structural support, connection, and protection scenarios in multiple industries. The following is a detailed analysis of its main application industries and specific scenarios:
1、 Architecture and Civil Engineering: Basic Structural Support
1. Building frame and steel structure
Application scenarios: Roof trusses, wall studs, column supports, etc. in industrial plants and warehouses. Angle iron is welded or bolted to form a triangular structure, utilizing its strong bending stiffness to enhance the overall stability of the building. For example, a steel structure factory building uses ∠ 100 × 100 × 8mm angle iron as the roof purlin, which can withstand a load of 1.5kN/m 2 and meet the design standard GB 50017-2017.
2. Architectural decoration and ancillary facilities

Application scenarios: Staircase handrail frames, balcony guardrails, air conditioning outdoor unit brackets, etc. The surface of angle iron can be treated with anti-corrosion measures such as painting and galvanizing. For example, residential balcony guardrails use ∠ 50 × 50 × 5mm galvanized angle iron, which ensures strength and avoids rust, with a service life of more than 10 years.

3. Foundation and Foundation Engineering
Application scenarios: Tower crane foundation embedded parts, scaffold pole connectors, etc. The right angle structure of angle iron is convenient for anchoring with concrete. A high-rise building tower crane foundation uses ∠ 140 × 140 × 12mm angle iron as an embedded part, with a tensile pull force of up to 500kN, ensuring the safety of the tower crane.
2、 Mechanical Manufacturing: Equipment Framework and Components
1. Machine tool and equipment base
Application scenarios: Small machine tool bases, production line supports, storage shelves, etc. Angle iron is cut, drilled, and welded into a frame. For example, a certain automated production line uses ∠ 80 × 80 × 6mm angle iron to make equipment brackets, which can bear up to 2 tons and have a processing cost 30% lower than cast iron bases.
2. Mechanical protection and safety devices
Application scenarios: Equipment protective cover frames, conveyor belt guardrails, workshop isolation barriers, etc. The rigid structure of angle iron can prevent equipment damage caused by external impact. For example, a certain machinery factory uses ∠ 63 × 63 × 5mm angle iron to make machine tool protective covers, which can withstand an impact force of 100N without deformation.
3、 Electricity and Communication: Transmission and Signal Facilities
1. Transmission lines and substations
Application scenarios: Low voltage transmission line towers, substation equipment brackets, cable trays, etc. Hot dip galvanized angle iron (zinc layer thickness ≥ 85 μ m) is resistant to atmospheric corrosion outdoors. For example, 10kV transmission line towers use ∠ 75 × 75 × 6mm hot-dip galvanized angle iron, which has a service life of over 20 years in coastal areas.
2. Communication base station and antenna bracket
Application scenarios: 5G base station towers, satellite antenna mounting brackets, fiber optic cable laying brackets, etc. The lightweight characteristics of angle iron (such as ∠ 40 × 40 × 4mm angle iron weighing 2.42kg per meter) are suitable for high-altitude installation. A certain communication base station uses ∠ 50 × 50 × 5mm angle iron to make antenna brackets, which can withstand a level 12 typhoon (wind speed of 32.7m/s).
4、 Automobiles and Transportation: Frame and Accessory Structures
1. Car frame and chassis
Application scenarios: Light truck frame longitudinal beam, trailer chassis support, carriage frame, etc. Q345B angle iron (yield strength 345MPa) can meet the requirements of lightweighting. For example, a certain light truck uses ∠ 70 × 70 × 5mm angle iron to make the carriage frame, which is 15% lighter than channel steel and has a bearing capacity of 1.5 tons.
2. Transportation facilities and guardrails
Application scenarios: highway barrier frames, parking lot parking barriers, bridge maintenance channels, etc. After hot-dip galvanizing and spray coating treatment, the surface of the angle iron can withstand salt spray testing (GB/T 10125) for up to 1000 hours without corrosion, making it suitable for outdoor traffic environments.

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