Advantage compared to alumina: zirconia exhibits better impact strength; zirconia is harder than alumina; zirconia can be honed to finer surface finishes than alumina. Finished to 4RMS, the zirconia liners provide a surface finish that is three to four times finer than alumina. All three of these property advantages translate to lower ownership costs. The improved wear directly extend the service life of the sleeve, while the improved impact strength reduces significantly the costs of replacing broken liners in the field. The surface finish improvements, meanwhile, have an indirect effect. The finer surface finish means less friction with the elastomer-and-metal pump pistons, which in turn extends piston life and reduces pump-cooling requirements., Based on phase transformation toughening technology and featured by good resistance to corrosion,high pressure and high temperature,high strength and rigidity,good performance and longer service life above 4000hr,the zirconia ceramic cylinder liner is applicable to the well drilling,offshore oil and natural gas development,which has deep oil reservoir and bad geological structure. We provide the following liners and much more: EMSCO: F-500, F-800, F-1000, F1300, F1600, FB-1300, FB-1600,D-375, D-700; GARDNER DENVER: PZ-7, PZ-8, PZ-9, PZ-10, PZ-11; IDECO: T-500, T-800, T-1000, T-1300, T-1600 NATIONAI: 7P-50, 8P-80, 9P-100, 10P-130, 12P-160, K-700, K-700A, K-500, K-500A, OILWELL: A-350PT, A-560PT, A-600PT, A-850PT, A-1100PT, A-1400PT, A-1700PT OMEGA: Opi1000; LS: 3NB-800, 3NB-1000, 3NB-1300, 3NB1300C, 3NB-1300C; QZ: Sl3NB-1300, Sl3NB-1300A, Sl3NB-1300B, Sl3NB-1600.