What is the purpose of having different grades of wall thickness in tubing?

The purpose of having different grades of wall thickness in tubing primarily relates to the ability of the tubing to handle various pressure levels. Tubing is often subjected to different internal and external pressures based on the application it is designed for. By varying the wall thickness, manufacturers can create a product that is capable of withstanding specific pressure ratings without compromising safety or function. Thicker walls typically provide greater strength and a higher tolerance for pressure, making the tubing suitable for applications in high-pressure environments such as in plumbing, gas lines, or industrial systems.

While other factors like aesthetics, fitting compatibility, and ease of installation play roles in the selection of tubing, they do not directly relate to the critical aspect of pressure handling that wall thickness addresses. Thus, the variation in wall thickness is a vital consideration for ensuring that the tubing performs effectively under its intended conditions.