一、前言宝钢总厂的轧钢系统由初轧厂、φ140mm无缝钢管厂、2050mm热连轧带钢厂、2030mm冷连轧带钢厂等四个厂组成。其中,初轧厂和无缝钢管厂为一期工程项目,热连轧带钢厂和冷连轧带钢厂为二期工程项目。初轧厂和无缝钢管厂投产后,每年将生产钢坯212万吨、钢管50万吨,就企业的经济效益而言,是很不理想的。待二期工程的热连轧带钢厂和冷连轧带钢厂建成投产后,每年将 I. Foreword The rolling system of Baosteel Plant is composed of four plants, namely, initial rolling mill, φ140mm seamless steel pipe mill, 2050mm hot rolling strip mill and 2030mm cold rolling strip mill. Among them, the first rolling mill and seamless steel pipe plant for the first phase of the project, hot strip mill and cold strip mill for the second phase of the project. After the initial rolling mill and the seamless steel pipe plant are put into operation, it will produce 2.12 million tons of billets and 500,000 tons of steel pipes annually, which is not ideal for the economic benefits of the enterprises. To be the second phase of the hot-strip mill and cold-rolled strip mill put into operation after the completion of each year will be