(under subclass 299) Processes wherein the base comprises elemental metal.
(1) Note. This and indented subclasses includes pickling unless etching is set forth for subclass 309.
SEE OR SEARCH THIS CLASS, SUBCLASS:
318+, for heating a metal base prior to application of coating material.
SEE OR SEARCH CLASS
29, Metal Working,
81.01+, for the removal of scale by scraping, flexing or treatment with water or steam. 134, Cleaning and Liquid Contact With Solids, for metal cleaning or pickling processes in general, including those processes wherein the acid, alkali or detersive material employed contains an oil or lubricant whereby a film of oil or lubricant may be left on the metal surface after the cleaning treatment.
148, Metal Treatment,
240+, and the definitions thereof for reactive treatment of a metal base.
