Common technical standards for domestic valve materials low alloy steel electrodes, chemical analysis
| Electrode diameter | Surfacing metal minimum size | Sampling site from the substrate surface minimum distance |
| 2.0,2.5 | 25 × 25 × 13 | 6 |
| 3.2, 4.0, 5.0 | 40 × 40 × 16 | 8 |
| 5.6, 6.0, 6.4 | 50 × 50 × 20 | 10 |
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Common Refining Agent,White Common Refining Agent,Slightly Transparent Common Refining Agent,Granular Common Refining Agent
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