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1, equal Angle steel, two sides of the same length Angle steel.

Angle iron is a long piece of steel with two sides perpendicular to each other in an angular shape. There are equal angles and unequal angles. 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, L30 x 30 x 3 indicates an equal Angle steel with a width of 30 mm and a thickness of 3 mm. It can also be represented by the model number, which is the number of centimeters of the side width, such as ∟3#. Angle steel can be composed of different stress components according to the different needs of the structure, and can also be used as a connection between the components. It is widely used in various building structures and engineering structures, such as beams, Bridges, power transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouses.