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| ladle refractory cost (Changes in steel ladle refractory lining materials at Granite City Steel have dramatically improved ladle lives while reducing steel penetration and ladle refractory costs. 格拉尼特城钢公司钢包耐火衬材质的改变已大幅度提高了钢包寿命，同时减少了钢水穿透事故、降低了耐火材料费用。) | |||
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