Tubular structures are elongated, hollow shapes that can be found in various natural and man-made forms. They are characterized by their cylindrical or pipe-like appearance, which allows for the passage of fluids, gases, or even solid materials. Examples of tubular structures include blood vessels in the human body, such as arteries and veins, as well as pipes used in plumbing systems. In engineering and architecture, tubular structures are often used for their strength and lightweight properties. They can be made from materials like steel or plastic and are commonly seen in frameworks, scaffolding, and even furniture design. Their design allows for efficient load distribution and can enhance stability in various applications.