应用于矿山爆破、水井钻孔，地热井钻孔，管棚支护，煤炭及有色金属采矿工程等径向成孔的钻孔工程。另可根据客户要求加工． Down-the-hole drilling pipe widely used in mine blasting,drilling the water well,drilling geothermal wells,pipe-roof Protection,coal and non-ferrous metal mining projects into radial hole drilling work. |
