
Plastics Piping Systems For Renovation Of Underground Gas Supply Networks - Part 3: Lining With Close-fit Pipes (iso 11299-3:2011)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Plastics Piping Systems For Renovation Of Underground Gas Supply Networks - Part 3: Lining With Close-fit Pipes (iso 11299-3:2011)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频