鞍钢小型轧钢厂,在“七五”期间,应用系统工程的理论和方法,搞节能开发,在产品结构不断变化的情况下,改善了各项经济技术指标。1989年与1985年相比,年钢材产量由52万吨提高到58.5万吨,平均年递增2.98％;总能耗由4.28万吨上升为4.5万吨,平均年递增1.26％; During the “Seventh Five-Year Plan” period, Anshan Iron and Steel Co., Ltd. rolled out energy-saving development based on the theories and methods of systems engineering. Under the circumstance of ever-changing product structure, various economic and technical indicators were improved. Compared with 1985, the annual steel output increased from 520,000 tons to 585,000 tons in 1989, an average annual increase of 2.98%; the total energy consumption increased from 42,800 tons to 45,000 tons, with an average annual increase of 1.26%;