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好吧问答库 > 跨度4.5米5根20的螺纹钢高度40的梁承重多少？他妈的问了几次都没人告诉我，狗屁百度知道，我靠

跨度4.5米5根20的螺纹钢高度40的梁承重多少？他妈的问了几次都没人告诉我，狗屁百度知道，我靠

2025年03月14日 06:44

有1个网友回答

网友（1）：

自己算呗
螺纹钢是热轧带肋钢筋的俗称。热轧带肋钢筋分二级HRB335（老牌号为20MnSi）、三级HRB400（老牌号为20MnSiV、20MnSiNb、20Mnti）、四级HRB500三个牌号。
这要看你是哪种了

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