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 steel is divided into large section steel, medium section steel and small section steel. Ordinary section steel can be divided into I-beam, channel steel, angle steel, round steel and so on according to its cross-sectional shape.
Large-scale steel: I-beams, channel steels, angle steels, and flat steels are hot-rolled in large-scale steels, and round steel, square steel, and hexagonal steels are forged and cold-drawn in addition to hot-rolling.
I-beams, channel steel, and angle steels are widely used in industrial buildings and metal structures, such as workshops, bridges, ships, agricultural machinery and vehicle manufacturing, transmission towers, and transportation machinery, which are often used together. Flat steel is used in construction sites as bridges, house trusses, fences, power transmission ships, vehicles, etc. Round bars and square bars are used as various mechanical parts, agricultural machinery accessories, tools, etc.
Medium-sized steel: medium-sized steel medium-working, grooved, angle, round, flat steel, similar to large-scale steel.
Small section steel: small section steel medium angle, round, square, flat steel, processing and use are similar to large section steel, small diameter round steel is often used as construction steel
