The roller drill uses the rolling action of the roller bit to break the rock and is suitable for drilling holes of 150 ~ 440 mm in diameter on the hard rock. It has the advantages of high efficiency and low labor intensity, and is widely used in large and medium-sized open-pit metal mines. The drill consists of an impactor (or drill bit), a rotary mechanism, a lifting mechanism, a pressure device, a walking mechanism, a slag discharge system, a drill frame and a drill pipe. Rotary drilling machines are only suitable for drilling softer minerals and coal.
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2025-08-14 13:34
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Round griddles are great for smaller stovetops, while rectangular ones offer more cooking space Round griddles are great for smaller stovetops, while rectangular ones offer more cooking space
Moreover, its suitability for both stove-top and oven use extends the scope of recipes you can experiment with Moreover, its suitability for both stove-top and oven use extends the scope of recipes you can experiment with
It becomes not just a cooking tool but a decorative piece, blending seamlessly into any kitchen decor It becomes not just a cooking tool but a decorative piece, blending seamlessly into any kitchen decor