
Buried, high-impact poly(vinyl chloride) (PVC-HI) piping systems for the supply of gaseous fuels Part 2: Fittings for a maximum operating pressure of 200 mbar (20 kPa)
出版:International Organization for Standardization

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Buried, high-impact poly(vinyl chloride) (PVC-HI) piping systems for the supply of gaseous fuels Part 2: Fittings for a maximum operating pressure of 200 mbar (20 kPa)
出版:International Organization for Standardization
专家解读视频