礦(kuang)用U型(xing)(xing)(xing)鋼支(zhi)架(jia)U型(xing)(xing)(xing)鋼支(zhi)架(jia)規(gui)格:礦(kuang)用U型(xing)(xing)(xing)鋼支(zhi)架(jia),U型(xing)(xing)(xing)鋼支(zhi)架(jia),25U型(xing)(xing)(xing)鋼支(zhi)架(jia),29U型(xing)(xing)(xing)鋼支(zhi)架(jia),36U型(xing)(xing)(xing)鋼支(zhi)架(jia),礦(kuang)用支(zhi)撐鋼;主要用于礦(kuang)井巷道、礦(kuang)井斜巷、礦(kuang)井平硐支(zhi)護等(deng);