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简介:2012年,不锈钢复合管受国际经济下滑、部分行业用钢量负增长、市场需求萎缩等不利因素的影响,我国钢铁行业呈现出严重困难的局面。数据显示,2012年全国生铁、粗钢、钢材产量分别为65791万吨、71654万吨、95186万吨,同比分别增长3.
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