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The definition of Cold galvanized pipe
Jun 06, 2018

Cold galvanized pipe is electrogalvanized, the amount of galvanized is very small, only 10-50g/m2, its own corrosion resistance is much different than hot galvanized pipe. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use electroplating (cold plating). Only small, well-equipped businesses use galvanizing, and their prices are cheaper. Construction department has been formally below, the elimination of backward technology of cold galvanized pipe, no use of cold galvanized pipe for water, gas pipe. The galvanizing layer of cold galvanized steel tube is electroplating layer. The zinc layer is relatively thin, and the zinc layer simply adheres to the steel pipe substrate, which is easy to fall off. Therefore, its corrosion resistance is poor. It is prohibited to use cold galvanized steel pipe as feed pipe in new residential buildings.

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