Angle steel can form various stress components according to different structural needs, and can also be used as connectors between components. It is widely used in various building structures and engineering structures, such as house beams, bridges, transmission towers, hoisting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, bus support installation, warehouse shelves, etc.

Angle steel belongs to carbon structural steel for construction. It is a section steel with simple section. It is mainly used for metal components and plant frame. In use, it is required to have good weldability, plastic deformation performance and certain mechanical strength. The raw material billet for angle steel production is low-carbon square billet, and the finished angle steel is delivered in hot rolling forming, normalizing or hot rolling state.

It is mainly divided into equilateral angle steel and unequal angle steel. Unequal angle steel can be divided into unequal edge equal thickness and unequal edge unequal thickness. And perforated angle steel. We also produce H-section steel.

The specification of angle steel is expressed by the dimension of side length and side thickness. At present, the specification of domestic angle steel is 2-20, with the number of centimeters of side length as the number. The same angle steel often has 2-7 different side thicknesses. The actual size and thickness of both sides of the imported angle steel shall be indicated, and relevant standards shall be indicated. Generally, large angle steel is used when the side length is more than 12.5cm, medium angle steel is used when the side length is between 12.5cm and 5cm, and small angle steel is used when the side length is less than 5cm.

The order of import and export angle steel is generally based on the specifications required in use, and its steel grade is the corresponding carbon steel grade. It is also an angle steel. In addition to the specification number, there is no specific composition and performance series. The delivery length of angle steel is divided into fixed length and double length. The fixed length selection range of domestic angle steel is 3-9m, 4-12m, 4-19m and 6-19m according to the specification number. The length selection range of angle steel made in Japan is 6-15m.

The section height of unequal angle steel is calculated according to the length and width of unequal angle steel. It refers to steel with angular section and unequal length on both sides. It is one of the angle steel. Its side length is 25mm × 16mm～200mm × l25mm。 It is rolled by hot rolling mill.

The specification of general unequal angle steel is: ∟ 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 house beams, bridges, transmission towers, hoisting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouses.

Import and export

China imports and exports angle steel in certain batches, mainly from Japan and Western Europe. Exports are mainly exported to Hong Kong and Macao, Southeast Asia, Latin America and Arab countries. Export production enterprises are mainly steel mills (rolling mills) in Liaoning, Hebei, Beijing, Shanghai, Tianjin and other provinces and cities. We are the steel plant in Tianjin.

The imported angle steel varieties are mostly large and small angle steel and angle steel with special shape, and the export varieties are mostly medium angle steel, such as No. 6, No. 7, etc.

Appearance quality

The surface quality of angle steel is specified in the standard. Our factory strictly requires that there shall be no harmful defects in use, such as delamination, scab, crack, etc.

The allowable range of geometric deviation of angle steel is also specified in the standard, generally including bending, side width, side thickness, top angle, theoretical weight, etc., and it is specified that the angle steel shall not have significant torsion.