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1986年3月,宝钢300t 氧气转炉试制了3炉高强度焊接结构钢Wel-Ten60RA 新钢种(新日铁钢号)。冶炼和初轧顺利成功,
In March 1986, Baosteel 300t oxygen converter trial-produced three new high-strength welded structural steel Wel-Ten60RA new steel grades (Nippon Steel). Smelting and early rolling smooth success,