
SPECIFICATION FOR DIMENSIONS AND MASSES PER UNIT LENGTH OF WELDED AND SEAMLESS STEEL PIPES AND TUBES FOR PRESSURE PURPOSES
出版:British Standards Institution

專家解讀視頻
SPECIFICATION FOR DIMENSIONS AND MASSES PER UNIT LENGTH OF WELDED AND SEAMLESS STEEL PIPES AND TUBES FOR PRESSURE PURPOSES
出版:British Standards Institution
專家解讀視頻