The steel is hot dip galvanized providing a metallurgically bonded coating of zinc offering unrivalled corrosion protection.
The galvanized finish is dressed to ensure all surfaces are smooth and consistent before being suspended with clean hooks or wires to ensure the material is earthed.
The steel goes through a multistage process where it is etched and then dipped in a conversion coating. This adds a microscopic ‘glue’ layer ensuring strong adhesion for the powder layer. It is then placed in an oven to dry.
The powder picks up a positive charge on exiting the spray gun and is attracted to the earthed material forming a uniform layer. The steel is then placed in a large oven to cure for 20-30 minutes.
Once the material has cooled it will be inspected to ensure it meets the desired quality requirements before being packaged in accordance with customer requirements.
For items to be a candidate for the Colourgalv process each piece should weigh no more than 750 kgs and should not exceed overall dimensions of 7m x 3m x 1.1m.
Most moving parts, such as hinges, are unsuitable for the process. An exception to this rule is slip bolts on gates, these should be designed to ensure that the bolts will have adequate room to move once the galvanizing has taken place.