Brazing

Brazing is universally used in the industry because it’s economical, easy to do, and produces strong welds and leak-tight joints.

Brazing is a joining process whereby a non-ferrous filler metal or alloy is heated to a melting temperature (above 450°C / 800°F) and distributed between two or more close-fitting parts
by capillary action.

In another similar usage, brazing is the use of a bronze or brass filler rod coated with flux, together with an oxy-acetylene torch, to join pieces of steel. The American Welding Society
prefers to use the term “Braze Welding” for this process, as capillary attraction is not involved