The UHB-ZK desulfurization circulation pumps are specifically engineered for demanding applications like flue gas desulfurization, utilizing steel-lined plastic construction with turtle-shell mesh lining technology. This design achieves secure anchoring of the plastic lining by welding a turtle shell mesh to the metal pump casing, effectively preventing cracking, deformation, or detachment of the lining. This design significantly enhances the quality stability and service life of lined corrosion-resistant pumps during long-term operation.