【摘要】 介绍了我国钢筋研制、生产、使用基本情况，阐述了我国热轧钢筋标准自１９５２年颁布执行以来所经历的８次修订，将热轧钢筋标准的演变与发展划分为四个阶段。更多还原

【Abstract】 Introduce the basic condition about research, produce, use of bar in China. Describe the standard of hot rolled ribbed steel bars has been revised eight times since excuted in 1952. The standard of hot rolled ribbed steel bars went through four stages to evolve and develop.更多还原