Pren 3565-1 - Aerospace Series - Pipe Couplings, 37 Deg, Spherical, In Heat Resisting Steel - Geometrical Configuration - Male Sealing Ends - Inch Series
出版:British Standards Institution
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Pren 3565-1 - Aerospace Series - Pipe Couplings, 37 Deg, Spherical, In Heat Resisting Steel - Geometrical Configuration - Male Sealing Ends - Inch Series
出版:British Standards Institution
专家解读视频