
Pipe joint assemblies and fittings of unplasticized polyvinyl chloride (U-PVC) pressure pipelines; dimensions of flanged and socket fittings
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Pipe joint assemblies and fittings of unplasticized polyvinyl chloride (U-PVC) pressure pipelines; dimensions of flanged and socket fittings
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频