This particular kind of sheet is a carbon steel sheet
and is zinc coated on two sides by way of continuous process of hot-dipping.

This process of hot-dip enables a tight layer of iron-zinc alloy on both
sides of the steel sheet. This iron-zinc alloy is formed by a diffusion
process when the molten zinc comes in contact with the heated steel strip.
Hot dip galvanized steel sheets are available to it's customers in a wide
variety of options like- different surface finishes, thickness, formability
levels etc. Sheets of such make stretched, deep drawn, lock seamed. These
sheets can be easily joined with the help of adhesives or by way of welding,
soldering and riveting. The sheet has qualities like corrosion resistance,
formability and the fabrication and easy joining process. Thus it is evident
that the end user has a lot to extract from such sheets in the various
applications.
Applications
The corrosion resistance quality is achieved in the galvanized steel sheet
due to it's zinc coating. It is thus evident that a longer shelf life of the
product can be achieved by increasing the thickness of the zinc coating. But
there are certain limitations to increasing the thickness too that is as the
thickness increases, the coating adhesion decreases during forming, the
surface smoothness is lessened and the weldability also decreases.
Galvanized steel sheet is ideal for application where corrosion resistance
is of utmost importance. The ideal places of application are:
- Air conditioning equipment
- Building panels
- Electrical boxes
- Electronic equipment
- Automotive parts including body panels and structural members
- Building panels
- Display cases
- Furnace parts and ductwork
- Mailboxes
- Farm buildings
- Equipment and machinery
- Guide rails
- Garbage cans
- Heating equipment
- Home laundry appliances
- Lighting fixtures
- Wall panels
- Prefabricated buildings
- Outdoor signs
- Playground equipment
- Vending machines
- Refrigerators and freezers
- Toolboxes
- Roofing
In all the above mentioned applications galvanized coated steel sheet
is preferred since it is corrosion resistant and thus increases the shelf
life of the product. In applications wherein there is involvement of high
temperature galvanized sheet should be cautiously used, the temperature
should not be more than 500° F. If the temperature increases this level
then the coating gets negatively affected. Galvanized sheets are best suited
to provide long service in moderate temperature.