There are two factors to be considered : 1 - The iron for galvanizing is a product and not galvanized for the purpose of maintenance. 2- If the option to choose the metal exists, it is desirable to choose iron that gives us a high quality product within the basic criteria, including: 1- The chemical composition of the metal, especially the content of silicon, carbon and phosphorous .... etc . 2- The surface must be free of organic pollutants (dyes, paints, polymers, bitumen). 3- No high corrosion or pores in the metal surfaces . 4- The thickness of the iron should be consistent and no significant differences. 5- The design of products should allow draining of molten zinc.
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