
STEEL FORGINGS FOR PRESSURE PURPOSES - PART 4: WELDABLE FINE GRAIN STEELS WITH HIGH PROOF STRENGTH
出版:Comite Europeen de Normalisation

專家解讀視頻
STEEL FORGINGS FOR PRESSURE PURPOSES - PART 4: WELDABLE FINE GRAIN STEELS WITH HIGH PROOF STRENGTH
出版:Comite Europeen de Normalisation
專家解讀視頻