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Drills-drill bits,tungsten carbide drill

In digging operations, the bit rotates around the vertical shaft and moves in the axial direction. The soil is cut under the action of the torque and axial force of the bit and is crushed and crushed by the compression and centrifugal force of the working blade, forming...
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Drills-tungsten steel drill,drill bits

Accuracy The tungsten steel drill, first of all, needs to consider the size precision machining requirements of the drill. Generally speaking, the smaller the machined aperture is, the smaller the tolerance is. Therefore, the drill bits are usually classified according to the nominal diameter size of the machined...
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