High-chromed bimetallic mum pump liners are made with a high
chrome iron sleeve in a forged steel hull. The bore hardness is
****7 Rockwell C scales while the hull has high tensile strength of
more than *0,**0psi. Combining the characteristics of chrome with
state of the art manufacturing, the liners can withstand mud
pressure up to 7,**0psi.
The hardened steel liner service life surpasses **0 hours
under the normal condition, which has earned us reputation from
world wide customers.
