Section steel is a type of strip steel with a certain cross-sectional shape and size, which is one of the four major types of steel (plate, tube, section, and wire). According to the shape of the section, steel sections are divided into simple section steel and complex section steel (special section steel). The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc; The latter refers to I-beams, channel steel, steel rails, window frame steel, curved steel, etc.
According to the different smelting quality of steel, section steel is divided into ordinary section steel and high-quality section steel. According to the current metal product catalog, ordinary section steel is further divided into large section steel, medium section steel, and small section steel. Ordinary steel sections can be divided into I-beams, channel steels, angle steels, round steels, etc. according to their cross-sectional shapes.
Large section steel: In large section steel, I-beam, channel steel, angle steel, and flat steel are all hot-rolled. In addition to hot-rolled, round steel, square steel, and hexagonal steel are also forged, cold drawn, and so on.
I-beams, channel steels, and angle steels are widely used in industrial buildings and metal structures, such as factory buildings, bridges, ships, agricultural machinery and vehicle manufacturing, transmission towers, and transportation machinery, often in conjunction. Flat steel is used in construction sites as bridges, building frames, fences, power transmission ships, vehicles, etc. Round steel and square steel are used as various Machine element, agricultural machinery accessories, tools, etc.
Medium section steel: Medium section steel is used for construction, groove, angle, round, and flat steel, similar in purpose to large section steel.
Small section steel: Small section steel with angles, circles, squares, and flats, similar in processing and use to large section steel. Small diameter round steel is commonly used as building steel bars