What are the types of steel?

There are many kinds of steel, which can be generally divided into four categories: type, plate, tube and wire.

1. there are many types of section steel, which is a solid strip steel with a certain cross-section shape and size. According to its different section shape and divided into simple and complex section two. The former includes round steel, square steel, flat steel, hexagonal steel and Angle steel; The latter includes rail, I-beam, channel steel, window frame steel and shaped steel. Small round steel with a diameter of 6.5-9.0mm.

2. the steel plate class is a kind of flat steel with a large width to thickness ratio and surface area. There are three kinds of thin plate (25mm thickness) according to different thickness. The steel strip is enclosed in the steel plate class.

3. the steel pipe class is a hollow section of long steel. According to its different section shape can be divided into round pipe, square pipe, hexagonal pipe and various special-shaped section steel pipe. According to the different processing technology can be divided into seamless steel pipe and welded steel pipe two categories.

4. steel wire type steel wire is a cold processing product of wire again. According to the shape of different round steel wire, flat steel wire and triangular steel wire. In addition to the direct use of steel wire, it is also used in the production of steel wire ropes, steel lines and other products.

Angle steel, commonly known as Angle iron, is a long strip of steel that is perpendicular to each other and angular. There are equal angles and unequal angles. The two sides of an equilateral Angle are equal in width. Its specifications are expressed in millimeters of side width × side width × side thickness. For example, "∠30×30×3", it means that the side width is 30 mm, the side thickness is 3 mm equal Angle steel. Can also be indicated by the model, the model is the number of centimeters of the side width, such as ∠3#. The model does not indicate the size of the different side thickness in the same model, so in the contract and other documents, the side width of the Angle steel, the side thickness size is complete, and the model is avoided. The specifications of hot-rolled equal-edge Angle steel are 2#-20#. Angle steel can be composed of various stress components according to the different needs of the structure, and can also be used as a connection between the components. It is widely used in various building structures and engineering structures, such as house beams, bridge beams, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves.

Round steel is a long, solid steel bar with a round cross-section. Its specifications are expressed in millimeters of diameter, such as "50" which means round steel with a diameter of 50 millimeters. Round steel is divided into hot rolled, forged and cold drawn three kinds. Hot rolled round steel is 5.5-250 mm in size. Among them :5.5-25 mm small round steel is mostly supplied in straight strips in bundles, commonly used as steel bars, bolts and various mechanical parts; Round steel larger than 25 mm, mainly used for the manufacture of mechanical parts or seamless steel blanks.

Rebar for reinforced concrete refers to the straight bar or disc bar steel used for reinforced concrete reinforcement, its shape is divided into two kinds of round steel bar and deformed steel bar, and the delivery state is straight bar and disc round two kinds. The light round steel bar is actually a small round steel and disk circle of ordinary mild steel. Deformed bars are bars with ribbed surfaces, usually with 2 longitudinal ribs and transverse evenly distributed along the length