The Paper introduced the loll Pass design of high-precision reinforced bars and the practical experence of working, please regulation, technological control and inspecting by tools.

• 介绍了生产尺寸精度高、外形精确的精轧螺纹钢筋时，轧辊孔型设计、加工、位相调节器、生产工艺控制及检验工具等的实践经验。