礦用(yong)U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia)U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia)規格:礦用(yong)U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia),U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia),25U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia),29U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia),36U型(xing)(xing)鋼(gang)(gang)支架(jia)(jia),礦用(yong)支撐(cheng)鋼(gang)(gang);主要用(yong)于礦井巷(xiang)道、礦井斜巷(xiang)、礦井平硐支護(hu)等(deng);