In general, determining whether a copper plumbing is a tube or a pipe often depends on the method of manufacture and the purpose for which it is used.
When used in applications such as refrigeration, air conditioning or heating systems, precise dimensions are required and seamless Copper tubes are chosen.
When used as a structural part of Pipe installation, such as through a water tap or fixture, they are often referred to as Copper pipes. Most of them are manufactured according to specific standard dimensions, such as 1/2 inch or 3/4 inch.
