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Venting |
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In the hot dip galvanizing process, steel is completely coated with corrosion-inhibiting zinc, which forms a highly abrasion-resistant metallurgial bong with the base steel. In order to ensure that all interior and exterior surfaces are protected from corrosion, entier steel fabrications are lowered into and raised of out of cleaning solutions, flux solutions, and molten zinc metal. In order to facilitate interior and exterior cleaning and coating, it is necessart to provide holes in fabrications to be galvanized.
The primary reason for vent and drain holes is to allow air to be evacuated from within and around the fabrication, allowing it be completely immersed in the cleaning solutions and molten zinc and for the excess zinc and solutions to drain out and away from the part.
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