Hengshui Jrain Frp rock drill extension rod enhancing efficiency and ...

A thread drill bit consists of a sharp cutting edge at the tip, which rotates rapidly as it cuts into the material. The body of the bit is typically coated with a hardened steel alloy to ensure durability and longevity. The most common types of thread drills are those with straight shanks, which can be used in standard drills, and those with tapered shanks, which are designed to fit into specialised machines.

...

A hard rock drill bit is essentially a piece of engineering brilliance, combining robust materials with intricate designs to create a tool that can efficiently fracture and remove hard, abrasive rocks. They are primarily classified into two categories fixed-cutter bits (also known as PDC or Polycrystalline Diamond Compact bits) and roller-cone bits. Each type has its unique advantages and is selected based on the specific drilling conditions and rock types encountered.

...
...
...