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本文介绍了中小型５００粗轧机的新结构，此轧机采用多项新技术，如整体焊接牌坊，快速换辊等，大大提高了生产作业率，将会广泛应用于小型棒材生产线上。
This article introduces the new structure of a small and medium-sized 500 roughing mill. This mill uses several new technologies, such as integral welding arch and rapid roll changing, which greatly increase the production operating rate and will be widely used in small-sized bar production lines.