The strain ageing of cold-rolling ribbed bar leads to high strength and drop of elongation,so this seriously affects the quality of concrete component and regular production of the bar.

• 冷轧带肋钢筋应变时效导致钢筋强度升高,延伸率下降,严重影响钢筋混凝土构件质量及生产厂家的正常生产。