Tungsten wire/filament:
1)Diameter: 0.3-3mm
2)Grade   Tungsten content (%)      type       usage
WAL1   >=99.92       T     Manufacturing wire of high color lamp, wire of shockproof lamp and double-spiral wire
              L     Manufacturing wire of incandescent lamp, cathode of transmitting tube, hyperthermia electrode and reaming tungsten wire
              W   Manufacturing folding heating cord of electron tube
WAL2   >=99.92       T     Manufacturing wire of fluorescent lamp
              L     Manufacturing heating cord of electron tube, wire of incandescent lamp, and reaming tungsten wire
              W   Manufacturing folding heating cord of electron tube, grid wire and cathode
W1 >=99.95       -      Manufacturing reaming tungsten wire and heating components
W2 >=99.92       -      Manufacturing grid side rod of electron tube and reaming tungsten wire
3)Standard:GB,ASTM
4)Special shape and size according to customer's demand.