Features: 1. Because the polyurethane lining has good elasticity, when the polyurethane is impacted by the medium, it is forced to compress under the action of external force. After the external force disappears, the polyurethane returns to its original state, and this "Yawara!" It greatly reduces the strong erosion and wear caused by the medium directly on the inner wall of the pipeline, and its friction life is dozens of times that of the steel pipe. 2. The polyurethane elastomer with anti-fouling lining has a symmetrical molecular structure and is externally non-polar. The adsorption of ca ~ (2 +), CO ~ (3 -), HCO ~ (3 -), H ~ (3 -) and 0H ~ (-) can not be formed in the slurry, and the scaling layer can not be formed. 3. The running resistance of the small inner tank is smooth and transparent, which can reduce the operating cost. 4, water resistance and stability, it will not like rubber products in the water expansion phenomenon and affect the use of performance. 5, the lining polyurethane and steel pipe are closely combined, the use of unique technology, will not fall off, voids and local tearing phenomenon. Light weight, easy to install due to the use of thin-walled tube substrate, the weight is relatively light, its installation connection can be used: flange connection, flexible pipe joint connection.