The Process

Initial Inspection

Work is inspected for suitability. Contaminated surfaces through paint, grease, sand etc. and wrongly positioned or missing holes will be communicated to the customer.

Pickle

Once the work has been wired onto jigs, they are transferred to our pickling tanks. These contain hydrochloric acid to remove surface rust and mill scale.

Rinse

Jigs are immersed in rinse water to clean off the acid.

Flux

The final step before the galvanising bath is flux. Work is placed in the flux tank to clean any remaining oxides to allow the zinc to wet the steel.

Hot Dip Galvanise

Work is left to dry in the enclosure around the galvanising bath. Once it is dried sufficiently, it is immersed into the bath of molten zinc at 453°. This is when the reaction between the steel and the zinc takes place. The amount of time steel is left immersed in the bath is dependent on the fabrication and its thickness.

Final Inspection

Once the steelwork has cooled sufficiently, it is cut down and packed. It is inspected at this point to ensure that it meets the British Standard of BS EN ISO:1461. Finally, it is weighed and ready for dispatch.