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By certification 
PURE TUNGSTEN——Bar/Rod
2 Range of use:
—For producing tungsten wires,tungsten heater,
twisted tungsten wire,negative electrodes,grids,
lead side rods wires,supports,and electrodes etc.
2 Surface finish:
—Black surface
—Alkali cleaning surface
—Grinded surface
2 Tungsten bar(rod) Tolerance：
Diameter（mm） |
Tolerance |
|
Black |
Polishing（mm） |
|
Φ0.800~Φ3.000 |
±2% |
±0.03 |
＞Φ3.000~Φ6.500 |
±2% |
±0.05 |
＞Φ6.500~Φ11.00 |
±2% |
±0.10 |
＞Φ11.00~Φ20.00 |
±2% |
±0.30 |
＞Φ20.00~Φ30.00 |
±2% |
±0.50 |
＞Φ30.00~Φ60.00 |
±2% |
±0.70 |
＞Φ60.00~Φ70.00 |
±2% |
±1.0 |
＞Φ70.00 |
±2% |
±1.5 |
Note:Special demands on tolerance available. | ||
