Profile steel is a kind of bar steel with a certain cross-sectional shape and size, and is one of the four major varieties of steel (plate, tube, profile, wire). According to the cross-sectional shape, the section steel is divided into simple section section steel and complex section section steel (special-shaped steel). The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc., and the latter refers to I-beam, channel steel, rail, window frame steel, curved steel, etc.
