Bs En 3302 - Aerospace Series - Bolts In Heat Resisting Steel Fe-Pm1708 (Fv535) - Classification: 1000 Mpa/550 Degrees C - Technical Specification
出版:British Standards Institution
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Bs En 3302 - Aerospace Series - Bolts In Heat Resisting Steel Fe-Pm1708 (Fv535) - Classification: 1000 Mpa/550 Degrees C - Technical Specification
出版:British Standards Institution
专家解读视频