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Steel specifications:The steel structure uses profiles of hot-rolled steel and section steel and cold-formed (or cold-formed) thin-walled steel. Hot-rolled steel sheets are thick steel plates (4.5~60mm), thin steel plates (0.35~4mm) and flat steel (thickness is 4~60mm, width is 30~200mm). Hot rolled sections are angled, I-beam, channel and steel (Figure 2.15). 

Angle steel is divided into two sides: equal and non-equal. I-beams are common I-beam, light I-beam and H-beam. Ordinary I-beam and light I-beam are indicated by the number, and the number is the number of centimeters of the height of the section. For the I-beams above 20, the same number has three types of web thicknesses: a, b, and c, and the type a web is thin. The web and flange of the light I-beam are thinner than ordinary I-beams. The webs and flanges of H-beams are thinner than ordinary I-beams. Compared with ordinary I-beam, H-beam has parallel inner and outer sides of the flange, which is easy to connect with other components. Various H-beams can be divided into T-shaped steels. The channel steel is available in both plain channel and light channel steel, and is also numbered in centimeters of the height of the section. There are two kinds of steel pipes: seamless steel pipe and welded steel pipe. Thin-walled steel is made of thin steel plate (usually Q235 or Q345 steel) by molding or bending, and its wall thickness is generally 1.5~5mm. The color profiled steel plate with anti-rust coating has a thickness of 0.4~1.6mm and is used as a light roofing and wall surface member.  Steel structure factory, steel frame workshop, elevator shaft structural, steel pipe scaffolds...Let’s know about the products of steel material.