
WELDING CONSUMABLES - TEST METHODS - PART 2: PREPARATION OF SINGLE-RUN AND TWO-RUN TECHNIQUE TEST SPECIMENS IN STEEL
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
WELDING CONSUMABLES - TEST METHODS - PART 2: PREPARATION OF SINGLE-RUN AND TWO-RUN TECHNIQUE TEST SPECIMENS IN STEEL
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频