Galvalume Steel Coil A653
lishengda
About
it
The ASTM A653 standard defines the specifications and requirements for aluminium-zinc plated materials, including chemical composition, mechanical properties, dimensions and other criteria.
Aluminium zinc plated steel sheets are covered with a layer of aluminium zinc alloy by hot dip plating to provide excellent corrosion protection. This treatment not only improves the durability of the steel sheet but also extends its service life.
In addition, aluminium-zinc plated steel sheet has good workability and weldability, which makes it suitable for a variety of complex processing techniques.
WHAT DO YOU WANT TO KNOWprocess
The process of A653 galvalume sheet mainly includes the following stages:
This process ensures that the superior corrosion resistance and processability of galvalume steel coil allows it to be used directly as architectural roofing panels, backsheets for residential and household appliances, as well as being widely used as a colour coated substrate. 55% aluminium-zinc plated sheet has a corrosion resistance between two and six times that of galvanised sheet, thus providing a longer service life and better performance.
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Pre-treatment stage
This stage includes the cleaning and compositional reduction of cold rolled coils. After passing through the uncoiler, the coil passes through the degreasing section and the reduction furnace to ensure that the coil is cleaned and reduced to a level where it can be galvanized.
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Central Section
This is the most critical technical step in the entire process. The coils pass through the zinc pots, where they are coated with a layer of zinc on the surface of the steel sheet. After coming out of the zinc pot, the steel plate is cooled and shaped in a cooling tower, completing the transformation from ‘Cinderella’ to ‘Beautiful Princess’.
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Post-treatment stage
The steel plate undergoes a variety of processes and finally comes to the post-treatment stage. This stage includes finishing, straightening, passivation, and finally the final product is rolled onto the winding machine.
Tianjin Lishengda Steel Group
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