Brazing is a metalworking process that joins two pieces of metal by melting and flowing a filler metal into the joint. The filler metal has a lower melting point than the base metals, and it flows into the joint by capillary action. Brazing is often used to join copper pipes, and it can also be used to join other metals, such as steel, aluminum, and brass.
There are several advantages to brazing copper. First, brazing creates a strong and durable joint that is resistant to corrosion. Second, brazing is a relatively quick and easy process, and it can be done with relatively simple tools. Third, brazing does not require the use of flux, which can be harmful to the environment.