Cement mortar lining is a protective technology in which cement mortar is sprayed or centrifugally poured on the inner wall of steel pipes or ductile iron pipes. CML can effectively prevent the conveyed medium from coming into direct contact with metals, thereby preventing corrosion, scaling and improving the efficiency of fluid transportation.Cement mortar lining is widely used in water supply pipeline systems, fire protection systems, sewage and seawater transportation pipe...