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20mnsi luo wen gang yong fang pi shi zhi
Author(s): 
Pages: 21-24+54
Year: Issue:  6
Journal: Research on Iron and Steel

Keyword:  Screw steelbar billet steel rod;
Abstract: This article dealt with the development process and product quality of billet used for 20MnSi screw steel bar.The trial producing shows that the steelmaking,ingotting and rolling process of 75 and 90 billet is available,the chemical composition and mechanical property of screw steel bar rolled with the billet meet GB1499-91 standard,the billet can be made largely.
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