
DUCTILE IRON PRESSURE PIPES WITH SOCKET WITH CEMENT-MORTAR LINING FOR GAS AND WATER PIPELINES - DIMENSIONS AND MASSES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
DUCTILE IRON PRESSURE PIPES WITH SOCKET WITH CEMENT-MORTAR LINING FOR GAS AND WATER PIPELINES - DIMENSIONS AND MASSES
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频