礦用(yong)U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia)U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia)規格:礦用(yong)U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia),U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia),25U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia),29U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia),36U型(xing)鋼(gang)(gang)(gang)支(zhi)(zhi)架(jia)(jia),礦用(yong)支(zhi)(zhi)撐鋼(gang)(gang)(gang);主(zhu)要(yao)用(yong)于礦井(jing)(jing)巷道、礦井(jing)(jing)斜巷、礦井(jing)(jing)平硐(dong)支(zhi)(zhi)護等;