
Ductile iron pipes, fittings, accessories and valves - External zinc-based coatings Part 1: Metallic zinc-based coatings with finishing layer
出版:International Organization for Standardization

專家解讀視頻
Ductile iron pipes, fittings, accessories and valves - External zinc-based coatings Part 1: Metallic zinc-based coatings with finishing layer
出版:International Organization for Standardization
專家解讀視頻