礦用(yong)U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia)U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia)規格:礦用(yong)U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia),U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia),25U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia),29U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia),36U型(xing)(xing)鋼(gang)(gang)(gang)支架(jia)(jia),礦用(yong)支撐鋼(gang)(gang)(gang);主(zhu)要(yao)用(yong)于礦井(jing)巷(xiang)(xiang)道(dao)、礦井(jing)斜巷(xiang)(xiang)、礦井(jing)平硐支護等;