礦用U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架規格:礦用U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架,U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架,25U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架,29U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架,36U型(xing)(xing)(xing)(xing)鋼(gang)(gang)支(zhi)架,礦用支(zhi)撐鋼(gang)(gang);主要用于礦井巷道、礦井斜巷、礦井平硐(dong)支(zhi)護等(deng);