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High performance high speed steel and quenching and tempering process are adopted.

HSS annular cutter, is a kind of magnetic drill bit, which is mainly used for drilling steel components, such as steel structure engineering, rail transit bridge, ship, machinery manufacturing, aerospace and other fields. Its drilling performance is obviously better than the traditional two edge twist drill, with the characteristics of high drilling efficiency, light drilling and labor saving, The HSS annular cutter and magnetic base drill can drill large work pieces in many directions. It is convenient and flexible to operate, and can effectively shorten the construction time. It has become the preferred tool for drilling and annular groove processing of modern steel members.

High quality high speed steel M2 material, smooth cutting, high drilling efficiency, drilling performance is significantly better than the ordinary two edge twist drill, each can drill 700 ~ 1000 holes.

1. The wear resistance of Zhuotuo drill can be improved by using the high speed steel plate drill in combination with the coolant during drilling, and a higher cutting speed can be selected;

2. The imported super hard high speed steel is selected and combined with layered cutting and low friction cutting geometry to obtain good wear resistance and chip removal performance.

3. Layered cutting and low friction cutting geometry can reduce blade chipping and improve chip removal performance;

4. In addition to the common handle types, there are many kinds of handle types (right angle handle, four hole handle, Fein handle, internal thread handle), which are suitable for all kinds of imported drilling rigs, Taiwan drilling rigs, domestic drilling rigs and drilling machines;

5. The specifications range from Φ 12mm to Φ 100mm, and the cutting depths are 25mm, 35mm, 50mm, 75mm and 100mm;

More information via https://www.zo-tools.com/product-list-annular-cutter.html