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| Material Designation | Standard | Same grade, different standards. | Source factory |
|---|---|---|---|
| 60 | GB 3522-1983
Carbon Steel |
||
| 70 | GB 3522-1983
Carbon Steel |
||
| 55 | GB 3522-1983
Carbon Steel |
||
| 25 | GB 3522-1983
Carbon Steel |
||
| 50 | GB 3522-1983
Carbon Steel |
||
| 30 | GB 3522-1983
Carbon Steel |
||
| 20 | GB 3522-1983
Carbon Steel |
||
| 40 | GB 3522-1983
Carbon Steel |
||
| 45 | GB 3522-1983
Carbon Steel |
||
| 15 | GB 3522-1983
Carbon Steel |
||
| 65 | GB 3522-1983
Carbon Steel |
||
| 35 | GB 3522-1983
Carbon Steel |