







Angle steel, commonly referred to as angle iron, is a long, versatile strip of steel characterized by two sides that meet perpendicularly. Below is an in-depth exploration of angle steel's attributes and uses:
1, Classification and Specifications
Angle steel is categorized predominantly into two types: equilateral and unequal angle steel. Equilateral angle steel boasts equal side lengths, denoted in millimeters as "edge width x edge width x edge thickness". For example, "∠ 30 x 30 x 3" signifies an equilateral angle steel with a 30mm edge width and a 3mm edge thickness. In contrast, unequal angle steel offers varied side lengths, providing enhanced flexibility and multi-functional applications.
Domestically, angle steel specifications range from 2 to 20 centimeters, with side length quantified in centimeters. A single angle steel type may feature 2 to 7 varying edge thicknesses. Imported variants must detail both side dimensions, edge thickness, and adhere to applicable standards.
2, Production Method
Hot Rolling: This is the predominant method for manufacturing angle steel, ideal for producing standard sizes in large volumes.
Cold Drawing: Suited for crafting angle steel with precise dimensions and stringent tolerances, this method delivers superior strength and surface quality.
Forging: Employed for fabricating large or specially required angle steel, forging enhances grain structure and boosts overall performance.
3, Features and Applications
Angle steel offers excellent weldability, plastic deformation capacity, and notable mechanical strength. As a carbon structural steel, it is integral to construction and classified under simple section steel.
Its versatility extends to numerous construction and engineering domains, including beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, and warehouses.
Moreover, angle steel can be configured into various load-bearing components tailored to specific structural requirements, serving as connectors between different elements.
4, Other Information
Key chemical composition indicators of angle steel include C, Mn, P, and S, with specific content variations.
Angle steel delivery is specified in fixed or double lengths, with the fixed length selection for domestic angle steel contingent on the specification number.
The weight of angle steel per meter can be approximated using the formula: weight per meter = 0.00785 × (edge width + edge width - edge thickness) × edge thickness. However, precise weight should reference a hardware manual.
In conclusion, angle steel's distinctive design and robust mechanical properties make it indispensable across a broad spectrum of industries and applications.