Galvanized welded pipe
In order to improve the corrosion resistance of steel pipes, general steel pipes are galvanized. Galvanized welded pipe is divided into hot galvanizing and cold galvanizing.
Generally, galvanized steel pipes are hot-dip galvanized, while electrical trunking is cold galvanized, with certain color differences
Cold plating --- zinc plating only on the outer pipe wall, hot plating --- both inside and outside
Galvanized welded pipe is reheated galvanized on the basis of welded steel pipe (that is, dissolve the zinc in the zinc pot, immerse the steel pipe in liquid zinc for a period of time, take it out, and then cool and blow dry) A layer of zinc layer is attached to the inner and outer walls of the steel pipe at the same time Galvanized pipe is generally used for the transportation of low pressure fluid (i.e. water, liquid gas)