1. pre-Inspection –Where the fabricated structural steel is viewed to ensure it has, if necessary, the proper venting and draining holes, bracing , and overall design characteristics necessary to yield A Quality Galvanized coating
2. Cleaning—steel is immersed in a caustic solution to remove organic material such as grease and dirt , Followed by Dipping in an acid bath ( hydrochloric or sulfuric ) to remove mill scale and rust, and finally lowered into a bath of flux that promotes zinc & steel reaction and retards further oxidation of the steel… ( steel will not react with zinc unless it is perfectly clean)
3. Galvanizing---the clean steel is lowered into a kettle containing 850 F molten zinc where the steel and zinc metallurgically react to form three zinc-iron intermetallic layers and one pure zinc layer
4. Final inspection – the Newly Galvanized steel is sight-inspected (if it looks good, it is ), followed Up by measurement of coating thickness with a magnetic thickness gauge.
