Hollow Drill Bit Classification

Based on their structure, hollow drill bits can be divided into two types: one is a hollow tool, which is hollowed out by drilling a hole through the center of the tool; the other is an internally cooled tool, which has coolant channels inside the tool, allowing cutting fluid to flow through the tool for cooling and lubrication.

Based on their application, hollow drill bits can be divided into tungsten steel hollow drill bits, high-speed steel hollow drill bits, tungsten carbide hollow drill bits, etc.