Profile steel is a strip steel with a certain cross-sectional shape and size. It is one of the four major steel products (plate, tube, type, wire). According to the shape of the section, the section steel is divided into a simple section steel and a complex section steel (shaped steel). The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc.; the latter refers to I-beam, omega profile,channel steel, steel rail, window frame steel, curved steel and so on.Several major categories of steel:According to the quality of steel smelting, steel is divided into ordinary steel and high quality steel. Ordinary steel is divided into large section steel, medium section steel and small section steel according to the current metal product catalogue. Ordinary steel can be divided into I-beam, channel steel, angle steel, round steel, etc. according to its sectional shape.
Large-sized steel: large-sized steel I-beam, channel steel, angle steel, flat steel are hot-rolled, round steel, square steel, hexagonal steel in addition to hot rolling, there are forging, cold drawing and so on.I-beams, channel steels and angle steels are widely used in industrial buildings and metal structures, such as factories, bridges, ships, agricultural machinery and vehicle manufacturing, transmission towers, and transportation machinery. Flat steel is used as a bridge, a frame, a fence, a power transmission ship, a vehicle, etc. in a construction site. Round steel and square steel are used as various mechanical parts, agricultural machinery parts and tools.Medium-sized steel: medium-sized steel medium, groove, angle, round, flat steel, the use is similar to large steel.Small section steel: small section steel medium angle, round, square, flat steel, processing and use similar to large steel, small diameter round steel is often used as building reinforcement.