What is the general amount of zinc in steel decks

The galvanized coating of the steel deck mainly plays the role of anti-corrosion. According to the specification, the steel deck of the combined floor and non-combined floor should be hot-dip galvanized, and electro-galvanized steel should not be used. The total content of its double-sided galvanized layer should meet the requirements of no embroidery damage during use, and it is recommended to use 120-275g/m².

When used as a non-composite floor, the content of galvanized layer can be lower. When used as a composite floor, the content of galvanized layer should not be less than 150g/m2. When it is a composite floor and the use environment is relatively harsh, the content of galvanized layer should be the upper limit or higher.

Higher galvanizing requirements, such as double-sided galvanizing amount of 300g/m², 350g/m² or aluminized zinc (5% aluminum) 275g/m², 300g/m², etc. The higher coating amount makes the composite floor longer Durability, the anti-corrosion ability of the same amount of aluminized zinc is about twice that of ordinary hot-dip galvanized.