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American Galvanizers Association Releases Two New Galvanized Steel Studies Videos

The American Galvanizers Association (AGA) is pleased to announce two new additions to its Galvanized Steel Studies (GSS) initiative. In June, the AGA visited two sites in North Carolina, the Charlotte Douglas Airport Parking Decks and the Metrolina Greenhouses. Each Galvanized Steel Study is a video featuring interviews with architects, engineers, owners, or others directly involved with a galvanized steel project speaking about the performance of the hot-dip galvanizing over the lifetime of the project. As of July 2015, six videos have been completed. 
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Ask Dr. Galv

Q: I’ve been asked to perform blast cleaning prior to galvanizing on all steel products that are welded. Why is this required and is this applicable for the MIG or TIG process when welding with bare or uncoated wire?

A: When welded structures are hot dip galvanized, the weld area cleanliness significantly affects the quality and appearance of the galvanized coating around the weld. If a coated electrode (i.e. a flux-coated welding wire/rod/stick) is used during welding, all welding flux and slag must be cleaned prior to galvanizing or the zinc coating will not adhere to the weld area (causing bare spots in the coating).

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© 2015 American Galvanizers Association. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. This material provides general information only and is not intended as a substitute for competent professional examination and verification as to suitability and applicability. The information provided herein is not intended as a representation or warranty on the part of the AGA. Anyone making use of this information assumes all liability arising from such use.