The thickness of the wall or envelope of the pressure vessel is the most significant characteristic of a pressure vessel, which is why particular standards and guidelines that are defined at the time of its design must govern it since they will depend mainly on the “pressure differential” and the stresses to which the envelope will be subjected.
Pressure vessels are thin-walled when there is a considerable difference between the wall thickness and the diameter of the container. Their design exclusively contains material or fluid at an internal pressure higher than the external pressure; otherwise, they could present a critical failure.
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