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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 40304-2021 |
Determination of content of nonmetallic inclusions in steel—Billet full section method 钢中非金属夹杂物含量的测定 钢坯全截面法 |
China National Standards Determination content nonmetallic |
 English PDF |
| GB/T 40281-2021 |
Determination of content of nonmetallic inclusions in steel—Extremum analytical method 钢中非金属夹杂物含量的测定 极值分析法 |
China National Standards Determination content nonmetallic |
English PDF |
| GB/T 10561-2005 |
Steel-Determination of content of nonmetallic inclusions-Micrographic method using standards diagrams 钢中非金属夹杂物含量的测定--标准评级图显微检验法 |
China National Standards Determination content nonmetallic |
English PDF |
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