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Drill Rod And Other Drilling Tools

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A self-drilling bar is a hollow, threaded bar that has been rolled for its entire length. It is made by cold rolling a flat tube. Drilling bars are used in geotechnical and structural engineering, as well as in post-tensioning. Drill rods are made from bar stock and can be used to make tools like drill bits, taps or dowel pins, shafts, reamers, files or punches. Although it is easy to shape, you can heat it up to bring back its hardness. Drill rods can be made from tool steel which has been ground to a precise tolerance. To make them more usable, they may be tempered before being machined. There are three types of drill rods available: oil hard, water hard, and air hard.
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