Spiral tungsten filament is applied in the vacuum metallizing. 1.Purity:99.95% Min. 2.Long life 3.Super thermal efficiency Spiral Tungsten filament is made of selected high-quality material of tungsten,with the properties of excellent thermal conductivity,finely processed,and long duration.Unusual stranded tungsten wires are applied as evaporator (heating element) in the vacuum metallizing (evaporation) process to coat thin film on surface of mirrors,kinescope,toys,home appliance,machine and various decoration,etc.

Grade :WaL/W1(+AL)

Diameter:φ0.4-1.3

Number of strands:1-10(strands)

Difference between 2 feet(mm):Big heater element:±2mm ; Small heater element: ±1mm

Inside diameter tolerance : ±0.3mm

tungsten filament