Angle steel, commonly known as angle iron, is a long strip of steel whose two sides are perpendicular to each other. There are
equilateral angles and unequal angles. The two sides of the 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.
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.
