1) Industrial coating
Found on
https://www.crosswordclues.com/clue/parkerizing
A method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of an electrochemical phosphate conversion coating. Also called phosphating and phosphatizing.
Found on
http://en.wikipedia.org/wiki/Glossary_of_firearms_terms
Parkerizing, bonderizing, phosphating, or phosphatizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of an electrochemical phosphate conversion coating. Parkerizing is usually considered to be an improved zinc or manganese phosphating process, and not to be an improved iron ...
Found on
http://en.wikipedia.org/wiki/Parkerizing
A chemical phosphate process developed during the second world war to provide an economical, durable and non-reflective surface finish to military firearms.
Found on
http://www.hallowellco.com/abbrevia.htm
A proprietary method of producing a protective phosphate coating on ferrous metals. Parker A treatment involves immersing in a bath of acid manganese phosphate. The Parker D is a modification using acid zinc phosphate with a nitrate iron as accelerator.
Found on
https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
No exact match found.
