Hengshui Jrain Frp drill rod extension for mine exploration.'

The application of large drill bits is vast and varied. In the construction industry, they are used to bore through concrete, stone, and metal structures, facilitating the installation of infrastructure like plumbing and electrical systems. In mining and exploration, large drills can penetrate deep into the earth's crust, uncovering valuable resources and data. In manufacturing, they are crucial for making precise holes in materials for assembly and component fitting.

...

The primary advantage of using an extension rod lies in its ability to extend the drilling depth without compromising on the torque and power transmission. This is particularly crucial in deep excavation projects, tunneling, and large-scale construction works where reaching substantial depths is a necessity. The extension rods allow drillers to penetrate further into the earth's crust, facilitating the extraction of minerals, installation of anchoring systems, or creation of underground infrastructure.

...
...