Summary for galvanizing thickness variation Discussion
Differing galvanizing thickness on flat and tubular areas is the issue raised by Japneet Singh, who says a product combining flat and tubular parts is showing uneven coating thickness and asks whether there is a solution. The excerpt provided does not include a visible technical reply, so no specific corrective method can be attributed from the thread text shown. The practical takeaway from the question itself is that mixed geometries can galvanize differently, so thickness variation may need to be addressed through design, process control, or both. Because the answer text is not present in the excerpt, any more detailed recommendation would be speculative. The thread metadata shows Geoff Crowley as a participant, but no answer content is available here to summarize or attribute.
Q. I am with consultant firm in India, newly added to galvanizing world.i am noticing that galvanizing results on flat surfaces and on tubular parts are different and our product is joined with both flat and tubular part….so the coating thickness varies….is there any solution for the same…
Japneet Singh
Engineer – India
August 24, 2010
 | A. Sir: The product with the thicker (likely gray colored) zinc coatings is likely made from reactive steel having a silicon and phosphorus content on the peak of the Sandlin curve. Regards, Dr. Thomas H. Cook A. The thickness of a galvanized coating varies with several factors. Of these only really the flux chemistry is controllable by the galvanizer. Have you talked to them about the problem. They are on the spot, they know the job, the item, rather than the sparse info available here.
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