... alloy.2, Recommended grade for making tungsten carbide rod blank and grinding finished rods . GradeISOPerformancePerformance&application recommended for tungsten carbide rod ... resistant alloy.3,Diameter of our tungsten carbide rod blank and grinding finished rods . 3mm,4mm,5mm,6mm,8mm,10mm, ... ,30mm. the length can be customerized. The tolerance of grinding and polishing can be +0.005/-0.005 mm4, Photo ...