One of the items found on the identification tag that is attached to each coil when it is received from the steel mill. The heat number is the identification number of the batch of steel from which this steel coil was made.
The Fabricator Blog
Welding is not black magic, it’s science - by Josh Welton Nonwelders who aren’t interested in learning more about the science don’t have an appreciation for what it takes to repair different items. One repair may take a few minutes, and another considerably longer. It depends on many things.
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