冷轧扭钢筋及其应用技术,是根据我国国情,于七十年代末由我国自行研制开发的,推广应用已近二十年。轧制设备和加工工艺虽不断有所改进,但由于没有统一的技术规范和完整的系统研究,其材料性能和应用水平地区差异较大。九十年代初期,浙 Cold-rolled twisted steel bar and its application technology is based on China's national conditions, developed by our own research and development in the late seventies, promote the use of nearly 20 years. Although the rolling equipment and processing technology continue to improve, but there is no uniform technical specifications and a complete system of research, the material performance and application levels vary greatly. The early nineties, Zhejiang