Specifications and types of angle steel

1.What is angle steel?

Angle steel, commonly known as angle iron, is a long strip of steel with two sides perpendicular to each other.

Angle steel can be composed of various stress-bearing components according to different needs of the structure, and can also be used as a connector between components. Widely used in various building structures and engineering structures, such as house beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, busbar support installation, and warehouses Shelves etc.

Angle steel is a carbon structural steel used in construction. It is a simple cross-section steel material. It is mainly used for metal components and factory building frames. It requires good weldability, plastic deformation performance and certain mechanical strength during use. The raw material billet for the production of angle steel is low carbon square steel billet, and the finished angle steel is delivered in a hot-rolled, normalized or hot-rolled state.

2. Specifications and types of angle steel

Angle steel is mainly divided into two types: equilateral angle steel and unequal angle steel. Among them, unequal angle steel can be divided into two types: unequal sides and equal thickness and unequal sides and unequal thickness.

The specifications of angle steel are expressed by the dimensions of side length and side thickness. At present, the specifications of China's domestic angle steel are No. 2-20, with the number of centimeters as the side length. The same angle steel often has 2-7 different side thicknesses. Imported angle steel indicates the actual size and thickness of both sides and the relevant standards. Generally, those with a side length of more than 12.5cm are large angle steels, those with a side length between 12.5cm and 5cm are medium-sized angle steels, and those with a side length of less than 5cm are small angle steels.

The ordering of import and export angle steel is generally based on the specifications required for use, and the steel grade is the corresponding carbon structural steel grade. Also, apart from the specification number, angle steel does not have a specific composition and performance series. The delivery length of angle steel is divided into two types: fixed length and double length. The fixed length selection range of domestic angle steel has four ranges: 3-9m, 4-12m, 4-19m, and 6-19m according to different specifications. The length selection range of angle steel produced in Japan is 6-15m.

The cross-sectional height of the unequal angle steel is calculated according to the long side width of the unequal angle steel. Refers to steel with an angular cross-section and unequal lengths on both sides. It is a kind of angle steel. Its side length ranges from 25mm×16mm to 200mm×125mm. Rolled by hot rolling mill.

The general specifications of unequal angle steel are: ∟50*32--∟200*125 with a thickness of 4-18mm.

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