Complaint
| Diameter, mm | Diameter telorance, % | Weight ( 200mm ), mg | Length min, m |
| 0.012−0.06 | - | >0.44−10.91 | 700 |
| 0.06−0.1 | - | >10.91−30.30 | 400 |
| 0.1−0.15 | -- | >30.30−68.18 | 250 |
| 0.15−0.2 | - | >68.18−121.20 | 150 |
| 0.2−0.35 | - | >121.20−371.19 | 100 |
| 0.35−0.7 | ±1.5−±2.5 | - | same as 150g |
| 0.7−1.8 ± | ±1.0−±2.0 | - | same as 200g |
Chemical Composition:
| Grade | W content min, % | Total impurity elements max, % | Each element max, % |
| W1 | 99.95 | 0.05 | 0.01 |
| W2 | 99.92 | 0.08 | 0.01 |
Technological process:
