礦(kuang)用(yong)U型(xing)(xing)(xing)鋼支架(jia)U型(xing)(xing)(xing)鋼支架(jia)規格:礦(kuang)用(yong)U型(xing)(xing)(xing)鋼支架(jia),U型(xing)(xing)(xing)鋼支架(jia),25U型(xing)(xing)(xing)鋼支架(jia),29U型(xing)(xing)(xing)鋼支架(jia),36U型(xing)(xing)(xing)鋼支架(jia),礦(kuang)用(yong)支撐鋼;主要(yao)用(yong)于(yu)礦(kuang)井(jing)巷道(dao)、礦(kuang)井(jing)斜(xie)巷、礦(kuang)井(jing)平硐支護等;