Anodizing: Anodizing is an electrochemical process that forms a protective oxide layer on the surface of the aluminium sheet. The process involves immersing the aluminium sheet in an electrolyte solution and passing an electric current through it. This forms a layer of aluminium oxide on the surface of the sheet, which improves its corrosion resistance and provides a surface suitable for painting or other coatings. Anodizing can produce a range of colours, from natural silver to bronze, gold, and black.

Painting: Painting involves applying a layer of paint onto the surface of the aluminium sheet. The paint layer not only improves the appearance of the sheet but also provides a protective layer that enhances its corrosion resistance. Painted aluminium sheets are widely used in various applications, including construction, transportation, and packaging. The paint used for aluminium sheets can be either solvent-based or water-based, and it can be applied using various methods, including spray painting, roller coating, and electrostatic coating.

Powder coating: Powder coating involves applying a layer of powder onto the surface of the aluminium sheet. The powder is electrostatically charged and applied to the sheet, which is then baked at a high temperature to melt and cure the powder. This process creates a durable and attractive finish that is resistant to chipping, fading, and corrosion.

Laminating: Laminating involves bonding a layer of plastic or paper onto the surface of the aluminium sheet. This process creates a durable and attractive finish that is suitable for various applications, including packaging, signage, and decorative panels. The laminating process can be done using various methods, including adhesive lamination, extrusion lamination, and co-extrusion lamination.

Brushing: Brushing involves mechanically brushing the surface of the aluminium sheet to create a pattern or texture. This process can create various finishes, including satin, hairline, and leather, which are widely used in architectural and decorative applications. Brushing can be done using various types of brushes, including wire brushes, nylon brushes, and abrasive brushes.

Polishing: Polishing involves mechanically polishing the surface of the aluminium sheet to create a mirror-like finish that this process can create various finishes, including bright, brushed, and mirror.

Chromate Conversion Coating: Chromate conversion coating involves applying a thin layer of chromate onto the surface of the aluminium sheet. This process improves the corrosion resistance of the aluminium and provides a surface suitable for painting or other coatings. Chromate conversion coating can produce a range of colours, from clear to yellow, green, and black.

Electropolishing: Electropolishing is an electrochemical process that removes a thin layer of material from the surface of the aluminium sheet. This process creates a smooth and shiny surface that is free of blemishes and imperfections.

Passivation: Passivation involves treating the surface of the aluminium sheet with a chemical solution that removes any impurities and improves its corrosion resistance. This process creates a clean and smooth surface that is resistant to corrosion and oxidation.

Etching: Etching involves chemically etching the surface of the aluminium sheet to create a pattern or texture. This process can create various finishes, including matte, satin, and textured, which are widely used in architectural and decorative applications. Etching can be done using various chemical solutions and equipment, including acid etching, electrochemical etching, and laser etching.