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Since 1946

Surface Preparation:

When dealing with any sort of coating application, surface preparation is the most important step. The surface preparation phase of the galvanizing process consists of three things:

* Degreasing/Caustic cleaning- A hot, alkaline solution is used to remove dirt, grease, oil, and other soluble markings.

* Pickling- A diluted solution of sulfuric acid is used to remove mill scale and surface rust. This chemically clean surface is needed because zinc will not react with an unclean steel surface.

* Fluxing- The steel is immersed in a zinc ammonium chloride solution. This removes oxides and prevents oxidation before the steel is dipped into the bath of molten zinc


Galvanizing:

During the actual galvanization phase, the item is immersed in a bath of molten zinc. The temperature of the zinc ranges between 815-850 degrees F. While immersed in the bath, which is at least 98% pure zinc, the zinc reacts with the iron in the steel to form a series of metallurgically bonded zinc-iron alloy layers, and commonly topped by a layer of pure zinc.

As the item is slowly withdrawn from the galvanizing bath, excess zinc is removed. The metallurgical reaction will continue, even after the items are withdrawn from the bath, as long as it remains near bath temperature. The now galvanized items are cooled by a passivation solution/water or by being left in open air.

Inspection:

This is our most important phase. The primary characteristics being inspected are the coating thickness, and the overall appearance/surface condition. Trained inspectors review the material to ensure a high quality coating and remedies imperfections.