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C20, C45n, C60, S235, S355, St52 with Normalization Treatment Mild Carbon Hot Rolled /Forged Steel Round /Square/Flat Bar, Find Details and Price about Flat Steel Bar Steel Bar from C20, C45n, C60, S235, S355, St52 with Normalization Treatment Mild Carbon Hot Rolled /Forged Steel Round /Square/Flat Bar - Tianjin Zhexi Technology Co., Ltd