SUPERIOR PROTECTION:Zinc bonded to steel is an unbeatable combination. Galvanizing forms a metallurgical bond between the coating and underlying steel. The end result is a barrier of tough zinc-iron alloys covered in solid zinc. Hardness, ductility, and adherence combine to provide the galvanized coating with superior abrasion resistance.
DURABILITY:The service life of galvanized products is typically measured in decades. Zinc oxidizes at a consistent rate in a given environment, providing predictable long-term corrosion protection.
CATHODIC PROTECTION VERSUS PAINT COATING:
Zinc CoatingIf the galvanized surface is damaged, the zinc (being more electro-negative than steel) becomes a sacrificial anode. This cathodic protection prevents corrosion from spreading and protects the base steel.
Paint CoatingIf the paint surface is damaged, the steel rusts, creeps under the paint film, and separates it from the steel. As the rust expands, corrosion accelerates, compromising more and more of the surrounding paint film.
PROTECTS SURFACES THAT OTHER COATINGS CAN'T REACH:Galvanizing totally immerses the steel structure in a bath of molten zinc, coating and protecting every inside and outside surface, even in deep hollow structures that spray painted coatings can't reach.
TIME CRITICAL DELIVERY:Our factory's environmentally controlled conditions mean that galvanizing can be applied regardless of weather or humidity, giving you the confidence to plan and budget the most time critical projects. THE PROCESS1. PREPARATION:Galvanizing requires a surface that is oil and oxide free. To ensure a solid bond between the zinc and steel, all structures are thoroughly prepared for galvanizing by caustic cleaning followed by acid pickling and fluxing. Certain specifications require sandblasting prior to galvanizing; we can also provide this in house.2. DIPPING:Hot dipping involves the complete immersion of clean, oxide-free steel in a molten zinc bath maintained at a temperature of approximately 850° Fahrenheit. The fabricated steel items are immersed until they reach bath temperature, and then slowly removed from the kettle for a smooth and even zinc finish.3. FINAL INSPECTION:Thorough visual, mechanical and laboratory tests ensure that the coating thickness, is uniform, and adherence to the steel surfaces are maintained to CSA and ASTM standards