Tungsten Rod(Bar)
Application
Tungsten rod(bar) is for the application if emission cathode,high-temperature forming rod,support wire,lead-in wire,printer pin,various delectrodes and heating devices of quartz furnace,etc.
Specification
unit:mm
| Surface Sizes | Swaged | As-Drawn | Cleaned& Straightened | Ground | Length Tolerance | ||||
| Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | ||
| 0.2≤d＜0.5 | － | － | ±0.01 | 0.01 | ±0.01 | 0.01 | － | － | L＜100±1.0 100≤L＜300±1.5 300≤L＜500±2.0 500≤L＜1000±2.5 1000≤L＜2000±5.0 |
| 0.5≤d＜0.8 | － | － | ±0.02 | 0.02 | ±0.02 | 0.02 | ±0.01 | 0.01 | |
| 0.8≤d＜1.0 | － | － | ±0.02 | 0.02 | ±0.02 | 0.02 | ±0.02 | 0.02 | |
| 1.0≤d＜1.8 | － | － | ±0.03 | 0.03 | ±0.03 | 0.03 | ±0.02 | 0.02 | |
| 1.8≤d＜3.5 | － | － | ±0.05 | 0.05 | ±0.05 | 0.05 | ±0.03 | 0.03 | |
| 3.5≤d＜5.0 | ±0.1 | － | － | － | － | － | ±0.05 | 0.05 | |
| 5.0≤d＜9.0 | ±0.2 | － | － | － | － | － | ±0.08 | 0.08 | |
| 9.0≤d＜13.0 | ±0.3 | － | － | － | － | － | ±0.10 | 0.10 | |
| 13.0≤d＜17.0 | ±0.4 | － | － | － | － | － | － | － | |
Note:Tungsten rod(bar),at or thicker than 17mm,or thinner than 0.2mm may be as agreed between supplier and purchaser.
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