







Angle steel, often referred to as angle iron, is a long steel strip with two sides meticulously crafted to form perfect right angles. Let's delve into the detailed intricacies and superior qualities of angle steel:
1. Classification and Specifications
Angle steel is expertly categorized into two primary types: equilateral and unequal angle steel. Equilateral angle steel boasts sides of equal length, with specifications elegantly expressed in millimeters as "edge width x edge width x edge thickness", such as "∠ 30 x 30 x 3", indicating an equilateral angle steel with precise measurements of 30 mm edge widths and a 3 mm edge thickness. Unequal angle steel, with its varied side lengths, offers flexibility and versatility, adapting to diverse construction needs.
Domestically produced angle steel encompasses a broad spectrum of sizes ranging from 2 to 20 centimeters, measured by the side's length in centimeters. A single angle steel type may present between 2 to 7 different edge thicknesses. Imported angle steel is meticulously labeled with actual dimensions, edge thicknesses on both sides, and adheres strictly to relevant standards.
2. Production Method
Hot Rolling: This predominant method is ideal for producing angle steel in standard sizes and large batches, ensuring efficiency and consistency.
Cold Drawing: Perfect for crafting angle steel with refined dimensions and stringent tolerances, this method enhances strength and surface quality, offering superior performance.
Forging: This technique is primarily used for creating large-sized or specially required angle steel, resulting in improved grain structure and overall performance.
3. Features and Applications
Angle steel is celebrated for its excellent weldability, plastic deformation capabilities, and robust mechanical strength. As a carbon structural steel, it is an essential component in construction, classified under simple section steel for its straightforward yet highly effective design.
Angle steel finds widespread applications across various building and engineering structures, including beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, and warehouses.
Its adaptability allows angle steel to form diverse load-bearing elements tailored to specific structural requirements and serve as crucial connectors between components.
4. Other Information
Critical verification indicators for angle steel's chemical composition include C, Mn, P, and S, each with distinct content levels, ensuring quality and reliability.
Delivery lengths for angle steel are classified into fixed and double lengths. The selection range for fixed lengths in domestic angle steel varies according to specification numbers, providing flexibility to meet diverse project demands.
The weight of angle steel is calculated using: weight per meter = 0.00785 × (edge width + edge width - edge thickness) × edge thickness. However, for precise weight calculations, it is recommended to refer to the hardware manual.
In conclusion, angle steel's distinctive shape and exceptional mechanical properties render it indispensable across a myriad of fields, fortifying its role as a cornerstone in construction and engineering.