Which factors are critical for determining the type of joint to use?

When determining the type of joint to use in piping systems, the thickness of the pipe wall and the material used are crucial factors. The wall thickness influences the strength and pressure rating of the pipe, while the material affects the jointing techniques and compatibility with different joint types. For example, thicker pipes may require specific joint methods that can handle the increased stress, while the material—such as PVC, copper, or steel—has unique properties that dictate how joints should be formed, whether through welding, soldering, mechanical fittings, or adhesives.

Other factors like geographical location, while important for installation conditions, do not directly pertain to selecting a joint type. The color of the pipe material is not relevant in the context of joint selection, as it does not impact the mechanical or chemical properties that define appropriate jointing methods. Similarly, while the availability of tools on site is important for practical considerations in working with piping, it is secondary to the inherent requirements of the pipe's wall thickness and material properties when determining the joint type.