
BS EN 514 - UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U) PROFILES FOR THE FABRICATION OF WINDOWS AND DOORS - DETERMINATION OF THE STRENGTH OF WELDED CORNERS AND T-JOINTS
出版:British Standards Institution

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BS EN 514 - UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U) PROFILES FOR THE FABRICATION OF WINDOWS AND DOORS - DETERMINATION OF THE STRENGTH OF WELDED CORNERS AND T-JOINTS
出版:British Standards Institution
專家解讀視頻