tungsten carbide drill rods, tungsten carbide drill rods ...
2021-5-22 · Tungsten carbide drills (hollow drill, core drilling) 1. To drill for more complex materials, you can choose a higher cutting speed. 2. Selected special high-performance alloy steel drill bit blade, effectively reduce the avalanche knife, good wear resistance. 3. Multi-terminal geometry cutting edge, improve drainage performance, to keep small ...
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