Galvanized steel tube is divided into cold galvanized steel pipe, hot dip galvanized steel pipe, cold galvanized steel pipe has been disabled, the latter has been the state advocates can use for the time being.
Sixties and seventies, developed countries in the world began to develop new pipe material, and gradually to disable the galvanized pipe.
China ministry of construction and other four ministries and commissions also send civilization to be banned from 2000 galvanized pipe for water supply pipe, the new district of cold water pipe has been rarely used galvanized pipe, some village used hot water pipe is galvanized pipe.
Hot dip galvanized steel pipe on fire protection, electric power and highways have a wide range of applications.
 

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