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

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