Tungsten Alloy Ball Pen Bead

China Tungsten Online can produce variety of tungsten alloy ball pen bead with sizes from Diameter 0.38 - 1.4mm. Tungsten heavy alloy ball has advanced production techniques and international technical level. Hardness>1400-1500, roughness Ra0.063-0.8 micron, Diameter Tolerance <0.001mm, lineation2000-2500m, wear-out<0.003mm, microspore uniform distribution, writes smoothly, lineation clearing, abrasion proof, long using life , printing ink’ wet ability well, carry over more printing ink, lineation clearing ; good handle ,taking bake superabundant printing ink.