Bi-metal liner is the main expendable parts of mud pump fluid end. They are combined with outer hull and inner sleeve. LONGCHAO is specialized in manufacturing high chrome liner for more than 30 years.
High finish for inner hole, wear resistance, corrosion resistance, longer service life.
Outer hull: forged by 45# steel
Inner sleeve: centrifugal casting by high carbon and high chromium cast iron
High chromium content: 26%~28% Roughness: Ra0.05, far higher than API standard Ra0.2 Hardness: ≥HRC62 Service life: more than 1000 hours
Zirconia Ceramic Liner
The zirconium ceramic liners can not only adapted to some tough environment such as deep oil reservoir, hard stratum and severe earthiness, but also can be used for offshore oil and natural gas exploitation as well. So ceramic liners are the first choice to upgrade high pressure mud pump liners.
Liner sizes are availabe from 4-1/2” to 7-1/2” for all popular mud pumps.
HP design with shoulder-on-hull design to prevent sleeve slippage
Reduced liner and piston wear
Lower thermal load on the liner wash system
better performance in wear resistant, corrosion resistant, high hardness