What is the usual method for a plumber to thread copper pipe?

When threading copper pipe, the common method employed by plumbers involves using a technique where they manually twist the pipe with specialized tools designed for this purpose, commonly referred to as a pipe die and handle. This hand-threading technique gives plumbers the precision needed to create threads that properly fit the corresponding fittings, ensuring a tight and leak-free seal.

This method is favored for its versatility and control, allowing the plumber to effectively manage the threading process on-site without needing heavy machinery or electric tools, which may not be as easily maneuverable in certain plumbing environments. Moreover, threading copper pipe by hand prevents potential damage to the material, such as crimping or uneven threading, which can occur with less delicate methods.

Hand threading is particularly suitable for smaller diameter pipes, which are more common in residential plumbing applications, making it the go-to technique among experienced plumbers.