NSF Test for Galvanizing: Smart Lead-Free Fixes

Summary for nsf test for galvanizing Discussion

NSF test for galvanized pipe is the focus of this thread. Mustafa Sag says his hot-dip galvanizing samples were sent to NSF but did not pass, and he asks how to make them pass. In reply, the answerer first clarifies that the issue is likely NSF 61, the drinking-water health-effects standard, and asks what part of the test failed, suggesting lead as a possible cause. The answer also notes that lead-free galvanizing is possible, implying that reducing or eliminating lead in the process may help meet the requirement. Because the thread excerpt is brief, no final fix is given; the key advice is to identify the exact failure mode from NSF and then adjust the galvanizing chemistry accordingly, especially if lead content is the problem.