牙轮钻机已成为国内外大中型金属露天矿山的主要钻孔设备，但我国的非金属矿，尤其是中小型非金属矿，有的至今却仍在使用冲击钻机穿凿炮孔，较多的使用4150潜孔钻机。冀东、宁国、柳州等较大水泥厂的石灰石矿，已进口了德国豪斯赫尔公司的HBM司助回转钻机等较先进机型。由于我 The roller cone drilling rig has become the main drilling equipment for large and medium-sized open-air mines at home and abroad. However, some non-metallic mines, especially small and medium-sized non-metallic mines, are still using the percussive drill to drill holes, 4150 DTH drilling rig. Jidong, Ningguo, Liuzhou and other larger cement factory limestone mine, has been imported from Germany Hull company HBM Division assisted rotary drilling rig and other more advanced models. Because of me