1) Standard: GB / T 4187-2017
| Name | Pure tungsten bars |
| Grade | W1,W2 |
| Purity | >=99.95% |
| Density | 19.3/cm3 |
| Surface | black,polished,sintered,machining |
| Diameter range | φ1mm-90mm |
| Length | Max 2000mm |
| MOQ | 1kg |
2) Usage: mainly used for manufacturing electric vacuum parts,guide rods, electrodes, outgoing lines, high-temperature parts, furnace heating rods, etc.
Produce Name: tungsten wire
1)Diameter range:0.01mm-3mm
2) Standard: GB / T 4187-2017
3) High temperature performance: subdivide various high temperature performance requirements according to different uses of customers.
4) Consistency of wire diameter: the quality difference of any two continuous 200mm wire segments of tungsten wire shall not exceed 0.5% of the nominal specification.
5) Straightness: straightening tungsten wire: tungsten wire with diameter <100um, and the natural sag height of each 500mm wire segment >450mm; For tungsten wire with diameter >100um, the arc height of every 100mm chord length is ≤10mm.
6) Surface condition: the surface is smooth without cracks, burrs, scratches, pits, unevenness, oil stains and other defects.
7) Wire winding performance: in the process of wire winding, tungsten wire does not work continuously.
