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QT= quenched and tempered; NT= normalized and tempered. a = air; f = furnaced; o = oil; w = water or water based medium.
宝山钢铁股份有限公司(简称“宝钢股份”)是中国最大、最现代化的钢铁联合企业。宝钢股份以其诚信、人才、创新、管理、技术诸方面综合...