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| Material Designation | Standard | Same grade, different standards. | Source factory |
|---|---|---|---|
| 35# | GB /T 711-2017
Carbon Steel |
||
| 30 | GB /T 711-2017
Carbon Steel |
||
| 45 | GB /T 711-2017
Carbon Steel |
||
| 10# | GB /T 711-2017
Carbon Steel |
||
| 50 | GB /T 711-2017
Carbon Steel |
||
| 20 | GB /T 711-2017
Carbon Steel |
||
| 65# | GB /T 711-2017
Carbon Steel |
||
| 40 | GB /T 711-2017
Carbon Steel |
||
| 70 | GB /T 711-2017
Carbon Steel |
||
| 25Mn | GB /T 711-2017
Carbon Steel |
||
| 55Mn | GB /T 711-2017
Carbon Steel |
- | |
| 60# | GB /T 711-2017
Carbon Steel |
||
| 55# | GB /T 711-2017
Carbon Steel |
||
| 70Mn | GB /T 711-2017
Carbon Steel |