工(gong)(gong)字鋼也稱(cheng)為鋼梁（英(ying)文名稱(cheng) I Beam)，是截面為工(gong)(gong)字形狀的鋼材。工(gong)(gong)字鋼分普通工(gong)(gong)字鋼和輕型(xing)(xing)工(gong)(gong)字鋼，H型(xing)(xing)鋼三...

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