随着科技的发展,新的领域的不断开拓,新材料的推广应用,钢铁产品的结构逐渐地发生了变化,钢铁生产工艺和模式也相应地发生了变革。目前,世界各国小钢厂的产量约为1.5亿吨,占世界总产量的18％。1985年,我国中小钢厂生产1006.55万吨钢,约占全国产量的21.5％,并在不断地增长。美国小钢厂产 With the development of science and technology, the continuous development of new fields, the popularization and application of new materials, the structure of steel products has been gradually changed, and the steel production process and mode have been changed accordingly. At present, the output of small steel mills in various countries in the world is about 150 million tons, accounting for 18% of the world’s total output. In 1985, China’s small and medium-sized steel mills produced 10,065,500 tons of steel, accounting for 21.5% of the national output, and is constantly increasing. American small steel production