- Work is inspected for suitability.
- Contaminated surfaces through paint, grease, sand etc. and wrongly positioned or missing holes will be communicated to the customer.
- 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.
- Jigs are immersed in rinse water to clean off the acid.
- 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.
- Once the steel-work 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.