Steel profile is a kind of strip of steel with a certain cross-sectional shape and size, and is one of the four main types of steel (plate, tube, type, wire). According to the shape of the steel profiles, the steel profile is divided into simple section steel and complex section steel (shaped steel). The former includes square steel, round steel, flat steel, angle steel, hexagonal steel, etc.; the latter includes I-beam, channel steel, rail, window frame steel, bending steel, etc.

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