... no defects (crackle, heavy skin, hole, trough, etc);2.Polished tungsten rods: Bright silver gray metallic luster. (process according to user ... boosting glass kiln electrode and electric Vacuum parts, etc. Tungsten contentTypeDiameter(mm)Dia.tolerance(mm)Length(mm)L tolerance(mm ... 60±0.1650max±1±0.5%ApplicationBe used for drawing tungsten wires, electrodes, heaters in high temperature vacuum furnace and ...