Three Special Types of Stranded Tungsten Wire
Single Stranded Tungsten Wire
Description: 0.5 mm diameter vacuum grade tungsten wire, 7.5 cm long, “V” is 18mm deep and 45° angle.
Triple Stranded Tungsten Wire
Description: vacuum grade tungsten wire, 0.5 mm diameter, 51mm long, 3½ turns, inside diameter 2.5mm, 7mm height.
Coiled Tungsten Wire
Description: 3-wire coiled tungsten filament, made of 0.63mm diameter wire, 101mm length, 6 coils 4.5cm ,6.3mm inside diameter of coil.
Types of Stranded Tungsten Wires
| Sort | Number of strands | Diameter (mm) |
Difference between 2 feet mm | Inside diameter tolerance | |
| Big heater element | Small heater element | ||||
| PIC 1 | 1-7 | 0.4-3.0 | ±1mm | ±0.3mm | |
| PIC 2 | 2-3 | 0.4 -1.0 | ±1mm | ±0.3mm | |
| PIC 3 | 2-7 | 0.4 -1.3 | ±1mm | ±0.3mm | |
| PIC 4 | 2-5 | 0.4-1.0 | ±2mm | ±1mm | ±0.3mm |
| PIC 5 | 2-5 | 0.4-1.0 | ±1mm | ±0.3mm | |
| PIC 6 | 2-10 | 0.4-1.0 | Several stranded coils | ±0.3mm | |
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