... or pressed; 4. 310mm~330mm, usually; 5. tungsten carbide material Hardness:HRA92.8 Density:14.5~14.8g/cm3 ... Reflectal&Birmasil We specialize in the manufacture of tungsten carbide products such as tungsten carbide strips, rods,rings,inserts, shims, wear ... parts, drawing dies,drilling bits,cold forging dies,bars, balls,burrs ,PCD blades,PCBN blades ...