jinzipan

twist drills:designed for 4d- 5d drilling in stainless steels,mild steels,aluminium alloy,aluminium dircast,copper. Taper shank twist drills:they are the standard cutting tools,strictly according to the national standards,the types of which include general,long,lengthened and extra long taper-shank twist drills which can meet the requirements of different types of machines processing.Depending on ...