hgy 1500 core drilling equipment for deep hole mining

Core Drilling Rig for Geological Survey (HGY-1500) ... Core Drilling Rig for Deep Hole Drilling (HGY-1500A) 1.32 years professional manufacture 2. Certificate ISO9001 2008 3. Export to Africa, the Middle East, South America, Asia, ... Mining Diamond Core Drill Bits 1.32 years history 2. Size 46 325mm international standard 3. Drill soft to ...

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