礦用(yong)(yong)U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia)U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia)規格:礦用(yong)(yong)U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia),U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia),25U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia),29U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia),36U型(xing)(xing)鋼支(zhi)架(jia)(jia)(jia)(jia),礦用(yong)(yong)支(zhi)撐鋼;主要用(yong)(yong)于礦井(jing)巷道(dao)、礦井(jing)斜巷、礦井(jing)平(ping)硐支(zhi)護(hu)等;