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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9790-2021 |
Metallic materials—Vickers and Knoop Microhardness tests of metallic and other inorganic coatings 金属材料 金属及其他无机覆盖层的维氏和努氏显微硬度试验 |
China National Standards Microhardness |
 English PDF |
| GB/T 27552-2021 |
Destructive tests on welds in metallic materials—Microhardness testing of welded joints 金属材料焊缝破坏性试验 焊接接头显微硬度试验 |
China National Standards Microhardness |
English PDF |
| GB/T 27552-2011 |
Destructive tests on welds in metallic materials - Microhardness testing of welded joints 金属材料焊缝破坏性试验 焊接接头显微硬度试验 |
China National Standards Microhardness |
English PDF |
| GB/T 9790-1988 |
Metallic and related coatings--Vickers and Knoop Microhardness tests 金属覆盖层及其他有关覆盖层 维氏和努氏显微硬度试验 |
China National Standards Microhardness |
English PDF |
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