1, Bi-metal liner mud pump 2, available for F series mud pumps 3, ... great hardness 4, High Chromium content Bimetal mud pump liner for F series mud pump * The sleeve is made of ... surface finish. * Diameter size: 90mm, 100mm, 110mm, 120mm, 130mm, 140mm,150mm,160mm,170mm,180mm we can produce all kinds of Liners ... a hardness of HRC≥61-64. bi-metal mud pump liner