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攀钢轨梁厂3号加热炉于1986年4月进行了一次改造性大修。均热段和加热段长1967 8mm改为复合预制块吊挂炉顶,预热段
Panzhihua Iron and Steel Track Furnace furnace No. 3 in April 1986 conducted a renovation overhaul. Both the soaking section and the heating section length 1967 8mm are replaced by the prefabricated block hanging roof and preheating section