我国钻车凿岩用中大直径钎头已替代进口由中国地质大学（武汉）和武穴市长江工具厂联合完成的《钻车凿岩用中大直径钎头的研究》成果，于１９９４年９月２６日在武穴市通过地质矿产部科技司和湖北省科委组织的专家鉴定。钻车凿岩用中大直径钎头，是在水电水利、矿山、铁道... China’s drilling rig with large diameter drill bit has been replaced by imports from China University of Geosciences (Wuhan) and Wuxue City, the Yangtze River Tool Factory jointly completed the “drilling rig drilling with large diameter drill head” results, in 1994 September 26 in Wuxue City, Ministry of Geology and Mineral Science and Technology Division and Hubei Provincial Science and Technology Commission organized by experts. Drilling rock drilling machine with a large diameter drill head, is water and hydropower, mining, railway ...