一、概述冷弯型钢与热轧型钢的主要区别是 :1 )在室温下弯曲成型 ,截面弯角部分由于钢材的冷弯效应 ,其强度高于平板部分 ;2 )型钢壁厚较薄 ,截面板件宽厚比较大 ,容易出现局部屈曲 ,通常采用有效宽度设计方法利用其屈曲后的强度 ;3)截面成型灵活 ,规格多达千余种 ,截面材料分 First, an overview of the main difference between cold-formed steel and hot-rolled steel is: 1) bending at room temperature, part of the corner due to the cold-rolled steel bending effect, the strength is higher than the flat part; 2) thin steel wall thickness, cut Panels are relatively large and thick, prone to local buckling, usually using an effective width design method to make use of its buckling strength; 3) cross-section forming flexibility, specifications up to more than a thousand species, cross-sectional material points