AZ30 Aluzinc Raw Material of prepainted steel coil for general building panels

Yearly capacity: 700,000 tons
Thickness: 0.16-2.5mm
Aluzinc coating: AZ30 – AZ185



Galvalume is steel coil with a lamination of Al-zinc alloy. Currently, 15-25% Al-zinc is most widely used in ppgi manufacture. In Jianglin, we are one of the leading manufacture of Al Zn billet.
With the different factory requirement, Al-zinc alloy formula can be different, which can increase the galvaluming process meanwhile, reduce the chance for stopping the production line.

Surface compare

Surface in Detail

Compared with 55% Aluzinc(the spangle is more dimensional, the edge is more clear)


The Basic Parameters


Grade DC51D+AZ, DC53D+AZ, S250GD+AZ,S300GD+AZ, S350GD+AZ, S550GD+AZ
Thickness(mm) 0.16mm-2.5mm
Width(mm) 600mm-1250mm
Inside Diameter(mm) 508/610mm
Outside Diameter(mm) 2000mm
Weight ≤25ton per coil
Spangle regular spangle, small spangle, big spangle
Surface Treatment chromated, oil, Chemical treatment and oil, dry, anti-finger print
Aluzinc thickness 30/30, 40/40, 50/50, 60/60, 75/75, 90/90, 110/110

Comparison between Galvanized coil and Galvalume coil

1. Coating type

Aluzinc coating is 55% Al-zinc content, Galvanized coil is pure zinc.
Aluzinc coil can have better anti corrosive ability, based on research.


2.  Better production efficiency

For producing Galvanized coil, the furnace need be higher temperature than Galvalume coils. When producing Galvanized coil, the furnace need twice cleaning process at least each month. However, when producing galvalume coil, there is less chance for cleaning the furnace, which can save factory much cost.

Application Guidance:

DC51D+AZ and DC52D+AZ are mainly used for normal cold processing , most widely commercial products including home appliance, furniture. S250GD, S300GD, S350GD, S550GD are mainly used for structure, or construction.