with the experience for making tunsten carbide milling insert(40,48,411)type for20 years , our recommended grade for making ... tunsten carbide milling insert(40,48,411)type Chinese Grade Equal to ISODensity(g/cm2)TRS ... (s)of the milling blanks(30,38,311,40,48 and 411)and XTPUN,XSNUN,XSPUN,XFCUN and XLPUN-(EDR ... -25.6±0.25 tungsten carbide milling insert(40,48,411)type