What are the types and specifications of angle steel?
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.
The specification of angle steel is expressed by the dimension of side length and side thickness. At present, there are two kinds of domestic angle steel with the same size of 20 cm thick edge. 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.