
1) Industrial coating
Found on
https://www.crosswordclues.com/clue/galvannealed

Galvannealed or galvanneal is the result from the combined process of galvanizing and annealing to produce specialized sheets of steel. The galvanization is made through the hot-dipping (Hot-dip galvanizing) process and an immediate in-line annealing and gives a very fine greyish matte finish. Galvanneal does not flake off its galvanized coating w...
Found on
http://en.wikipedia.org/wiki/Galvannealed

An extra tight coat of galvanizing metal (zinc) applied to a soft steel sheet, after which the sheet is passed through an oven at about 1200 degrees F. The resulting coat is dull gray without spangle especially suited for subsequent painting.
Found on
https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
No exact match found.