
Hand- and machine-operated circular screwing dies for taper pipe threads - R series (ISO 4230:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Hand- and machine-operated circular screwing dies for taper pipe threads - R series (ISO 4230:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频