Original title: How many minutes does it take to drill 1 meter with a drilling rig? YWG series down-the-hole rove the working efficiency. This model has the advantages of low comprehensive energy consumption,Tapered Rock Bit, high energy utilization rate and high cost performance. It is a wise choice for your down-the-hole operation. 2. Product application: drilling of blasting holes in various rocks and reinforced concrete. Application area: engineering field: earthwork, demolition engineering, road and bridge engineering,fastest dth hammer, tunneling engineering, (non) excavation engineering, water conservancy engineering, etc. Mining field: stone mining (marble, granite, dth rock bit ,DHD Drill bit, sandstone, limestone, etc.), metal mining, coal mining, sand mining, etc. 3. Advantages of the producoperation under complex working conditions. And 5, that dig cost is low: through the transformation of the excavator,Mining Drilling Equipment, the excavator has the rock drilling function of the rock drill and does not affect the function of the excavator, and the price is only 1/10 of that of a hydraulic rock drilling jumbo, and is even lower than that of a pneumatic rock drill jumbo. Return to Sohu to see more Responsible Editor:. wt-dthtools.com