
Bs En 3014 - Aerospace Series - Self-Locking Serrated Shank Nuts In Heat Resisiting Steel Fe-Pa92ht - Classification: 1100 Mpa/650 Degree C
出版:British Standards Institution

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Bs En 3014 - Aerospace Series - Self-Locking Serrated Shank Nuts In Heat Resisiting Steel Fe-Pa92ht - Classification: 1100 Mpa/650 Degree C
出版:British Standards Institution
专家解读视频