What is the first step in the proper procedure for soldering copper pipes?

The first step in the proper procedure for soldering copper pipes is to clean the joint. This is crucial because soldering relies on a clean surface to ensure a good bond between the metal components. When the surfaces of the copper pipe and fitting are not thoroughly cleaned, oxidation, dirt, or debris can prevent the solder from adhering properly, leading to leaks or weak joints.

Cleaning typically involves removing any oxidation from the copper, as well as ensuring that the surfaces are free from grease, oil, or any other contaminants. This can be done using a wire brush or sandpaper to create a shiny, clean surface. Once the surfaces are prepared, it becomes easier to proceed with the other steps of the soldering process, such as applying flux, heating the pipe, and finally applying solder.

The proper sequence of these actions is essential for achieving a successful solder joint that is both strong and leak-free.