A lined tube is a pipeline device with a steel or rigid structure as the backbone, lined with a rubber layer that excels in wear resistance, corrosion resistance, and temperature tolerance. It combines the properties of metal and rubber, creating a balance between rigidity and flexibility. Through the physical and chemical properties of the rubber, it reduces the impact and corrosion on the external structure of the pipeline medium, resulting in high strength, wear resistance, corrosion resistance, and high-temperature resistance. This significantly extends the service life of the pipeline and reduces the cost for users.