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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9443-2007 |
Penetrant testing forsteel castings 铸钢件渗透检测 |
China National Standards forsteel |
 English PDF |
| GB/T 15169-2003 |
Qualification test of welders--Fusion welding forsteels 钢熔化焊焊工技能评定 |
China National Standards forsteel |
English PDF |
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