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为了使棒材能够满足竞争日益激烈的市场及汽车工业要求，奥地利奥钢联公司和GFM公司共同开发新的定径系统──精确轧制系统（PRS）。PRS不仅能生产接近公差要求的圆棒．还可在中间坯规格基本不变的情况下生产多种规格国棒．第1套PRS系统已于1998年夏在美国查帕拉尔公司投人工业
In order to enable the bar to meet the increasingly competitive market and automotive industry requirements, Austrian VAI and GFM jointly develop a new sizing system, Precision Rolling System (PRS). PRS not only produces round rods that meet tolerance requirements. But also in the case of the same basic specifications of the production of a variety of national conditions bar. The first PRS system was introduced to Chaparral in the United States in the summer of 1998