What brands or models do HSS, SUS and Nachi refer to in the drill?

HSS is an industrial term for high-speed steel, and HSS on the drill bit indicates that it is made of high-speed steel. ? HSS stands for high speed steel. High-speed steel is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or front steel, commonly known as Bai Gang. Used for drilling common metal materials (alloy steel, non-alloy steel, cast iron, cast steel and non-ferrous metals).

Soviet SUS drill bit in Taiwan Province province. Taiwan Province Su's drill bits are divided into: straight shank twist drill, titanium-plated drill, stainless steel drill, aluminum alloy left-handed drill, tungsten steel drill, Bai Gang round bar center drill, fixed-point countersunk head drill, Knowles drill, extended drill with inclined handle, powerful extended drill, Danish cement drill, countersunk head milling cutter, chamfering tool.

Japan's NACHI drill, Japan's Fuji Syusuke Co., Ltd. (NACHI) drill, tap, milling cutter, straight edge end mill, reamer, chamfering cutter, side milling cutter, etc.