Annealed copper tube is also known as?

Annealed copper tube is known as soft copper tube because the annealing process involves heating the copper and then allowing it to cool slowly. This process alters the structure of the metal, relieving internal stresses and making the copper more malleable and ductile. As a result, annealed copper is easier to bend and shape without breaking, which is ideal for applications that require flexibility.

In contrast, the other terms refer to different types of copper or manufacturing processes that do not represent the characteristics of annealed copper. Hard copper tube generally indicates a product that has not undergone the annealing process and is therefore less flexible. Raw copper tube would refer to copper that has not been processed or finished, lacking the specific properties of annealed copper. Welded copper tube signifies a fabrication method that involves joining copper pieces together, which is distinct from the characteristics of a soft or annealed tube. This makes the identification of the annealed type as soft copper correct and relevant in the context of its applications and handling.