HNA offers four different types of liners for all popular pumps to suit any drilling conditi***, including premium chromium liners, ceramic liners, chromium-plated liners and hardened liners.
1) Premium Chromium Liners: HNA premium liners combine the strength of a forged steel out shell with the abrasion and corrosion resistance of a high chromium iron inner sleeve. These liners feature a centrifugally cast high chrome iron sleeve which is machined and heat treated to a minimum uniform bore hardness of 62RC. Each liner is machined to close tolerance to assure ease of installation and long liner life with the inside diameter of these premium liners honed to a mirror-like finish for ***ooth even wear during the life superior performance under tough corrosive and abrasive conditi***.
2) Ceramic Liners: HNA ceramic liners combine the strength of a forged steel out shell with the abrasion and corrosion resistance of a ceramic inner sleeve. We provide Zirconia(ZrO3) sleeves as well as Alumina(AL2O3) sleeves of which Zirconia exhibits better impact strength, higher hardness and can be honed to finer surface finishes than alumina.
3) Chromium-planed Liners: HNA offer chromium-plated liners made from premium forged steel with the core plated by chrome. The chrome-plated liners h***e hardening characteristics of 58 to 62 Rockwell C hardness. Material is 45# forged steel, tensile strength is larger than 450MPA, elongation is larger than 17%,hardness is HRC180-200. The bore is plated by chrome, thickness is 0.15
4) Hardened liners: HNA hardened liners offer economy in a liner that is made for normal to mildly corrosive mud conditi***. These liners are hardened and heat treated under strict quality control to a minimum of 60 RC hardness and a depth of 125 inches. Each liner is honed to a mirror-like finish for ***ooth and even wear during the life of the liner and is machined to close tolerances to assure easy installation and long life.