
Coating of ductile cast iron pipes Part 3: Zinc coating with protective finishing layer
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Coating of ductile cast iron pipes Part 3: Zinc coating with protective finishing layer
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻