FAQ of Hot Dipped Galvanized Steel Coil

1.How are galvanized coils made?
Galvanized steel coil are made from cleaning and heat-treating cold rolled coils and then are zinc coated from zinc pot. Through this process, cold rolled steel coil are plated with zinc for anti-rust.
2.What are the benefits of galvanized steel coil?
  1. Processing performance
   Hot dipped galvanized steel coil fully meet the requirements of rolling, stamping, bending and other forms of processing.
   2. Corrosion resistance
  Hot dipped galvanized steel coil has excellent corrosion resistance, and the service life is 6 times that of hot rolled and cold rolled steel under the test of the same thickness and surface treatment. 
  3. Heat resistance
  Hot dipped galvanized steel coil can be used for a long time in an environment of 315 degrees without changing color while other steel sheets are just used at a temperature of only 230 degrees, and 250 degrees will change color.
  4. Mechanical properties
  The mechanical properties of galvanized steel sheets are significantly higher than those of hot rolled and cold rolled steel sheets. The yield strength of galvanized steel sheet is between 300 and 400mpa, the tensile strength is between 300 and 550mpa, and the elongation is between 28% and 40%.
3.How long will galvanized steel coil last?
The zinc coating of hot-dipped galvanized steel will last 10 to 30 years in the open environment. High humidity and temperature have less life time for galvanized steel coil.
4.Does galvanized steel rust?
Galvanized steel coil will take 10 year or more to rust, but it will eventually rust. Galvanized steel coil the layer of zinc on both sides. which can resit rust acts by preventing oxygen and water from the steel.