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Four types of steel

1. Section steel

There are many types of section steel, which is a solid long strip of steel with a certain cross-sectional shape and size. According to the different cross-sectional shapes, it can be divided into simple and complex cross-sections. The former includes round steel, square steel, flat steel, hexagonal steel and angle steel; the latter includes steel rail, I-beam, channel steel, window frame steel and special-shaped steel, etc. Small round steel with a diameter of 6.5-9.0mm is called wire rod.

2. Steel plate

It is a flat steel material with a large aspect ratio and surface area. According to the thickness, it can be divided into three types: thin plate (thickness < 4mm), medium plate (thickness 4-25mm) and thick plate (thickness > 25mm). Steel strips are included in the class of steel plates.

3. Steel pipes

Steel pipes are long strips of steel with hollow sections. According to its cross-sectional shape, it can be divided into round pipe, square pipe, hexagonal pipe and various special-shaped cross-section steel pipes. According to different processing technology, it can be divided into two categories: seamless steel pipe and welded pipe.

4. Steel wire

Steel wire is another cold processed product of wire rod. According to different shapes, it can be divided into round steel wire, flat steel wire and triangular steel wire. In addition to direct use, steel wire is also used to produce steel wire rope, steel wire and other products.

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