... Euroboor, BDS, Ruko.4. Made of high-performance high speed steel., e.g. M2, M2AL, M35, M42 etc. And ... be used on various materials, like steel plate, Copper, aluminium, cast iron, stainless steel and plastic. 5. The specifications from ... annular cutters production.Product applicationOur product is mainly used to steel structure project, rail way traffic, bridging, shipbuilding, machine manufacture and ...