Classification of angle steel

It is mainly divided into two types: equal-sided angle steel and unequal-sided angle steel. Among them, the unequal-sided angle steel can be divided into two types: unequal-sided and equal-thickness and unequal-sided and unequal-thickness.

The specification of angle steel is expressed by the dimensions of side length and side thickness. At present, the domestic angle steel specifications are 2-20, and the number of centimeters of the side length is the number. The same angle steel often has 2-7 different side thicknesses. Generally, large angle steels with a side length of 12.5cm or more are medium-sized angle steels with a side length of 12.5cm-5cm, and small-sized angle steels with a side length of less than 5cm.

The order of angle steel is generally based on the specifications required in use, and its steel grade is the corresponding carbon steel grade. In addition to the specification number, angle steel has no specific composition and performance series. The delivery length of angle steel is divided into fixed length and double length. The selection range of fixed length of angle steel in my country is 3-9m, 4-12m, 4-19m and 6-19m according to the different specifications.

◆ The two sides of an equilateral angle are equal in width. Its specifications are expressed in millimeters of side width × side width × side thickness. For example, "∟30×30×3" means an equilateral angle steel with a side width of 30 mm and a side thickness of 3 mm. It can also be expressed by the model, which is the number of centimeters of the side width, such as ∟3#. The model does not indicate the size of different side thicknesses in the same model, so the side width and side thickness of the angle steel should be filled in on the contract and other documents to avoid using the model separately. The specification of hot-rolled equilateral angle steel is 2#-20#.

◆ The section 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 section and unequal lengths on both sides. It is a kind of angle steel. Its side length is 25mm×16mm～200mm×125mm. Rolled by hot rolling mill. The general unequal angle steel specifications are: ∟50*32--∟200*125, and the thickness is 4-18mm.

Unequal angle steel is widely used in various metal structures, bridges, machinery manufacturing and shipbuilding, various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, Container racks and warehouses, etc.

Application of angle steel

It is widely used in various building structures and engineering structures, such as beams, bridges, transmission towers, hoisting and transporting machinery, ships, industrial furnaces, reaction towers, container racks, warehouses, metal components and workshop frames.