







Angle steel, often referred to as angle iron, is a versatile long strip of steel characterized by its two perpendicular sides. This robust material is fundamental in numerous applications, offering a distinctive shape that enhances its utility in a wide array of constructions. Below is a comprehensive exploration of angle steel's attributes:
1. Classification and Specifications
Angle steel is primarily categorized into two types: equilateral and unequal angle steel. Equilateral angle steel boasts equal side lengths, with specifications articulated in millimeters as 'edge width x edge width x edge thickness,' such as '∠ 30 x 30 x 3,' denoting an equilateral model with 30mm edges and a 3mm thickness. In contrast, unequal angle steel features differing side lengths, granting it superior versatility and adaptability for diverse applications.
Domestically, angle steel specifications range from 2 to 20 centimeters, with the side length in centimeters representing the specification. Each angle steel type can have 2 to 7 different edge thicknesses. Imported variations are marked with precise dimensions and edge thicknesses on both sides, alongside requisite standards.
2. Production Methods
Hot Rolling: This is the predominant method for angle steel production, ideal for creating standard-sized and large-volume products efficiently.
Cold Drawing: Suited for producing angle steel with more refined dimensions and stringent tolerances, this method enhances strength and surface quality, making it ideal for precision applications.
Forging: This method is reserved for crafting large-sized or specially specified angle steel, offering improved grain structure and enhanced overall performance.
3. Features and Applications
Angle steel is highly regarded for its excellent weldability, plastic deformation capabilities, and reliable mechanical strength. As a carbon structural steel, it is a pivotal component in construction and falls under the category of simple section steel.
Its extensive use spans various building and engineering structures, including beams, bridges, transmission towers, industrial furnaces, ships, and warehouses, highlighting its versatility and indispensability.
Angle steel is adept at forming diverse load-bearing components tailored to specific structural requirements and serves as critical connectors between components.
4. Additional Information
The chemical composition of angle steel is principally verified through its C, Mn, P, and S content, with each element's proportion varying according to specifications.
Angle steel's delivery is categorized into fixed and double lengths, with the fixed length range for domestic products contingent on the specification number.
To approximate the weight of angle steel, the formula used is: weight per meter = 0.00785 × (edge width + edge width - edge thickness) × edge thickness. Note, this provides a rough estimate, and the actual weight should refer to the hardware manual for precision.
In summary, angle steel is a cornerstone in numerous sectors, thanks to its distinctive shape and remarkable mechanical properties, offering indispensable support across a multitude of applications.