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tions is a kind of economic thin wall steel with light crosssection; it is also known as steel cold bending section or coldbending section. Cold forming steel sections is the main materialfor the production of light steel structure. It has all kinds ofespecially thin, reasonable shape and complex cross section thathot rolling can not produce. Compared with hot-rolled steel, in thecase of the same cross section area, the turning radius canincrease 50???60%, sectional moment of inertia can increase0.5???3.0 times, so it can reasonably use strength of materials;compared with ordinary steel structure (i.e., steel structure madeof traditional i-steel, channel steel, Angle steel and steelplate), 30 ~ 50% steel can be saved.Widely used in: Automobilemanufacturing, rail vehicles, elevators, shelves, transmissiontower, construction machinery, construction industry, furniture andso on.
