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Standard Code | Standard Title | Standard Class | Order |
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GB/T 3323.2-2019 |
Non-destructive Testing of welds—Radiographic testing—Part 2:X- and gamma-ray techniques with digital detectors 焊缝无损检测 射线检测 第2部分:使用数字化探测器的X和伽玛射线技术 |
China National Standards Te |
English PDF |
GB/T 3323.1-2019 |
Non-destructive Testing of welds—Radiographic testing—Part 1:X- and gamma-ray techniques with film
焊缝无损检测 射线检测 第1部分:X和伽玛射线的胶片技术 |
China National Standards Te |
English PDF |
GB/T 12009.4-2016 |
(Plastics - Aromatic isocyanaTes for the production of polyurethane - Part 4: Determination of isocyanate content - amendment No. 1) 塑料 聚氨酯生产用芳香族异氰酸酯 第4部分:异氰酸根含量的测定《第1号修改单》 |
China National Standards Te |
English PDF |
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