天津市轧钢厂生产的中小型钢材,多年来一直供不应求,但因片面注重外延扩大再生产,受到厂内外条件限制,生产一直难以迅速发展。三中全会后,特别是党中央指出“调整、改革、整顿、提高”方针后,该厂总结过去经验,针对生产薄弱环节,抓住重点,依靠企业工人、技术人员和干部,有计划有步骤进行技术改造,基本上做到了投资少,收效快,经济效果显著。根据实际情况,该厂在突出重点,有针对性地进行技术改造的作法是: The small and medium-sized steel products produced by the Tianjin Rolling Mill have been in short supply for many years. However, due to one-sided expansion and re-production, the production has been difficult to develop rapidly due to restrictions within and outside the factory. After the Third Plenary Session, especially after the Party Central Committee pointed out the “adjustment, reform, rectification, and improvement” policy, the plant summed up its past experience, focused on production weaknesses, seized the key points, and relied on corporate workers, technicians, and cadres, with planned steps. The technological transformation basically achieved low investment, rapid results, and remarkable economic results. According to the actual situation, the key point of this plant in carrying out targeted technological transformation is to: