礦用U型(xing)鋼(gang)支(zhi)架U型(xing)鋼(gang)支(zhi)架規格:礦用U型(xing)鋼(gang)支(zhi)架,U型(xing)鋼(gang)支(zhi)架,25U型(xing)鋼(gang)支(zhi)架,29U型(xing)鋼(gang)支(zhi)架,36U型(xing)鋼(gang)支(zhi)架,礦用支(zhi)撐鋼(gang);主要用于(yu)礦井(jing)(jing)巷(xiang)道、礦井(jing)(jing)斜巷(xiang)、礦井(jing)(jing)平硐支(zhi)護等;