Painted steel is used in many market applications including, cladding & roofing, residential & garage doors, ceiling grid systems, containers and major appliances.

Pre-painted steel is a steel coil painted before forming using the coil coating process. Coil coating is a continuous and highly automated process for coating metal in coil form before fabrication. In one continuous process at ArcelorMittal Dofasco’s paint facility Baycoat, a steel coil up to 60 inches wide and at up to 480 feet per minute, is unwound, and both the top and bottom sides are cleaned, chemically treated, primed, oven cured, top coated, oven cured again, rewound and packaged for shipment. 

The pre-painted steel product is composed of a steel substrate - cold rolled or zinc-based metallic coated - with a surface treatment layer, a paint primer coating and a paint finish topcoat. A wide range of paint systems that can be subjected to a wide variety of forming processes without damage or loss of adhesion are used to provide high durability, forming properties and unique aesthetic characteristics.  

Advantages of pre-painted steels: 

  • No paint shop at the customer facility 
  • Quality of its aesthetic features 
  • Long term durability (weathering and corrosion resistance) 

Types of Pre-Paint steel


Based on evidence of 50 years of field exposure, ArcelorMittal Dofasco warrants to its direct customers that Galvalume™ Prepainted steels, if fabricated and installed within Canada and the United States of America for exterior building roofing and exterior siding panels in building applications will not rupture, fail structurally, or perforate due to corrosion for a period which varies based on coating weight after shipment.

  • Hot rolled

    All flat rolled steel products at ArcelorMittal Dofasco start by rolling heated slabs from steelmaking through the hot strip mill to the ordered hot roll dimensions with the specified chemistry and mechanical property range.

    Find out more

  • Cold rolled

    ArcelorMittal Dofasco produces a variety of cold rolled products consisting of conventional, full hard, weathering, enameling and electrical steels.

    Find out more

  • Galvalume

    ArcelorMittal Dofasco is a licensed producer of Galvalume and Galvalume Plus (zinc & aluminum) coated steel products in Canada. Galvalume is produced through the hot-dip process and is backed up with an industry leading warranty ranging from 40 to 60 years based on coating weight and surface treatment.

    Find out more

  • Galvanized

    ArcelorMittal Dofasco produces a variety of hot dip galvanized (zinc coated) steel products using hot roll or full hard cold roll strip depending on ordered thickness. The steel substrate of coated coils can be selected from different steel qualities, from mild steels to advanced high strength steels, and coated with different coating thickness’ depending on the end use requirements.

    Find out more