The drill tip, connecting flange, and drill rod of auger drill bits are typically made of high-carbon steel with precision machining to enhance wear resistance. For cutting tools, rock auger drill bits use imported American cutting teeth with tungsten-cobalt cemented carbide inlays at the tips, suitable for weathered bedrock, well-cemented gravel and pebble strata, and permafrost. Soil auger drill bits use shovel-shaped wear-resistant alloy teeth, suitable for loose strata such as soil and sand above the groundwater level.
