ZDDR‑400 Automatic Stone Core‑Drilling Machine

Join us for a close-up look at the ZDDR-400 Automatic Stone Core-Drilling Machine in action. In this video, we demonstrate how this bridge-structure drilling equipment operates, showcasing its precision drilling capabilities for granite and marble processing. You'll see the machine's double-screw transmission system and variable-speed motor at work, plus learn about its applications in tombstone manufacturing and stone column production.