熱軋鋼筋化學(xué)成分①表3-18品種牌號(hào)化學(xué)成分(%)外形強(qiáng)度等級(jí)C(碳)Si(硅)Mn(錳)V(釩)光鋼圓筋ⅠA3、AY30.14~0.220.12~0.300.35~0.65-變形鋼筋Ⅱ20MnSi0.17~0.250.40~0.801.20~1.60-20MnNb60.17~0.25≤0.171.00~1.50-Ⅲ②25MnSi0.2~0.30.60~1.001.20~1.60-Ⅳ (共 4286 字) [閱讀本文] >>
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 熱軋鋼筋化學(xué)成分①表3-18品種牌號(hào)化學(xué)成分(%)外形強(qiáng)度等級(jí)C(碳)Si(硅)Mn(錳)V(釩)光鋼圓筋ⅠA3、AY30.14~0.220.12~0.300.35~0.65-變形鋼筋Ⅱ20MnSi0.17~0.250.40~0.801.20~1.60-20MnNb60.17~0.25≤0.171.00~1.50-Ⅲ②25MnSi0.2~0.30.60~1.001.20~1.60-Ⅳ (共 4286 字) [閱讀本文] >>