礦用U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia)U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia)規格:礦用U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia),U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia),25U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia),29U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia),36U型(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架(jia)(jia)(jia),礦用支(zhi)撐鋼(gang)(gang);主要(yao)用于礦井巷(xiang)道、礦井斜巷(xiang)、礦井平硐支(zhi)護(hu)等(deng);