Are there any special design and fabrication considerations required to make steel ready for hot-dip galvanizing?
Yes. Specifically, fabricated steel must allow for easy flow of the cleaning chemicals and molten zinc metal over and through it. This means that gussets must be cropped, holes put in the proper location for draining and venting of zinc from tubular configurations, weld flux removed, overlapping surfaces must be seal-welded, and light gauge material temporarily braced. The details of design and fabrication are contained in the AGA publication The Design of Products to be Hot-dip Galvanized After Fabrication, found on this web site.
