钢铁工业是国民经济重要的基础性产业,也是我国实现工业化的支柱性产业。国民经济许多重要行业对钢材均构成需求,在《国民经济行业分类》(GB/T 4754-2002)所列的20个大的门类中,与钢铁有密切关系的就占9个,其中建筑业和制造业对钢铁依赖性最大。依据《1997年中国投入产出表》计算,建筑业对钢材的完全消耗系数为0．13, Iron and steel industry is an important basic industry in the national economy and a pillar industry in our country for realizing industrialization. Many important industries in the national economy constitute the demand for steel. Of the 20 large categories listed in the “Classification of National Economic Industries” (GB / T 4754-2002), 9 are closely related to steel, of which the construction industry And manufacturing is most dependent on steel. According to “1997 China’s input-output table” calculation, the building’s complete consumption coefficient of steel is 0.13,