To provide a method for brazing gunmetal and lead-removed brass capable of satisfying the revised value of standards on lead elution even if the main tube member and branch members are joined by brazing filler metal and also capable of making working cost inexpensive.

The main tube member and branch members made of lead-removed brass produced by a continuous casting rod are brazed with brazing filler metal 4 in a vacuum purge atmospheric furnace heated to ≥800°C in a reducing atmosphere, so as to be joined. As the brazing filler metal, hard solder having a melting point of ≥450°C is applied.