
WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 7: STAINLESS STEEL TUBES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 7: STAINLESS STEEL TUBES
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻