







Angle steel, often referred to as angle iron, is a versatile strip of steel featuring perpendicular sides. Below is an in-depth exploration of its characteristics:
1. Classification and Specifications
Angle steel is categorized into equilateral and unequal types. The equilateral variant has sides of equal length, specified in millimeters as 'edge width x edge width x edge thickness', such as '∠ 30 x 30 x 3', denoting an equilateral angle steel with 30 mm edge width and 3 mm thickness. The unequal type has differing side lengths, offering enhanced flexibility and adaptability.
Domestic angle steel specifications range from 2 to 20 centimeters, with side lengths reflected in centimeters. Varieties of the same angle steel may present 2 to 7 different edge thicknesses. Imported versions must clearly state actual dimensions, edge thicknesses, and adhere to pertinent standards.
2. Production Method
Hot Rolling: The predominant method for producing angle steel, ideal for manufacturing standard-sized and large-quantity angle steels.
Cold Drawing: This approach is preferred for crafting angle steel with precise dimensions and tighter tolerances, yielding higher strength and superior surface finish.
Forging: An approach reserved for large-sized or specially designated angle steel, enhancing grain structure and overall performance.
3. Features and Applications
Angle steel boasts excellent weldability, plastic deformation capacity, and adequate mechanical strength. As a carbon structural steel, it falls under the category of simple section steel, primarily used in construction.
It finds extensive application in diverse constructions and engineering frameworks, including beams, bridges, transmission towers, lifting machinery, ships, industrial furnaces, reaction towers, container racks, and storage facilities.
Beyond these, angle steel serves as a foundation for various load-bearing structures per structural demands, additionally functioning as a connector between components.
4. Additional Information
Key chemical composition indicators for angle steel include C, Mn, P, and S, with variable content levels.
The delivery lengths of angle steel are classified into fixed and double lengths, with domestic fixed length selections dependent on specification numbers.
To calculate angle steel weight: weight per meter=0.00785 × (edge width + edge width - edge thickness) × edge thickness. This formula provides an estimated weight; the actual weight should be referenced from a hardware manual.
In conclusion, angle steel's distinct shape and superior mechanical properties make it invaluable in numerous sectors.