Grade |
Tungsten content(%) |
usage |
WAL1 |
>=99.92 |
Manufacturing wire of high color lamp, wire of shockproof lamp and double-spiral wire
Manufacturing wire of incandescent lamp, cathode of transmitting tube, hyperthermia electrode and reaming tungsten wire
Manufacturing folding heating cord of electron tube |
WAL2 |
>=99.92 |
Manufacturing wire of fluorescent lamp
Manufacturing heating cord of electron tube, wire of incandescent lamp, and reaming tungsten wire
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 |