"Microscopic testing " CNS Standards List| Brass Screwed | Technical Drawings | Dimensions 127, | Stainless steel | B ISDN | Method test | Tapping Screws, | Method Test | |
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CNS 2910
2019 Edition Microscopic testing method for non-metallic inclusions in steel 鋼內非金屬介在物之顯微鏡試驗法 |
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