CHROME-IRON LINERS(BIMETAL LINERS)
The outer hull of this liner is a high strength forging 45# steel, and the inner sleeve is high chrome iron by centrifugally cast for a deeper hardness. Bore hardness is 59-65 Rockwell. The sleeve is then inserted into the hull at a tightness that exceeds its counterparts. The liner is rated to match the pressure up to 5,000 PSI and above and the extreme long service life to be around 1000h.

ZIRCONIA-CERAMIC LINERS
Zirconia-ceramic liner is produced from a unique Zirconium-based ceramic compound that is extremely pure and stabilized, so that it avoids Alumina-ceramic liners's brittle, and exhibits better polished, impact strenght, long lasting, tough, crack resistant than Alumina-ceramic liner.
With these property advantages, the liners' sevice life will be greatly extended,and an indirect effect will reduce the friction between the liner and pistons, which in trun extends piston life and reduces pump-cooling requirements, and good performance on the high temperature application. Finally, it will save a huge cost for the drilling work.

GASKETS&PACKINGS
Gaskets and packings are two kinds of being made of high-quality synthetic rubber and polyurethane, both offers excellence performance in required application.