A lined pipe is a pipeline with a steel or rigid structural framework on the outside, and a lining layer made of rubber with excellent properties such as wear resistance, corrosion resistance, and heat resistance. It combines the characteristics of metal and rubber, creating a pipeline equipment that is a perfect blend of rigidity and flexibility. Through the physical and chemical properties of the rubber, it reduces the effects of the transported medium on the external structure, such as impact force and corrosion, giving the pipeline high strength, wear resistance, corrosion resistance, and high-temperature resistance. This significantly extends the service life of the pipeline and reduces the user's costs.