... 3, great hardness 4, High Chromium content Bimetal mud pump liner for F series mud pump * The sleeve is made of wear-resistant ... ,160mm,170mm,180mm we can produce all kinds of Liners for mud pump 12P-160,10P-130,FB-1600 and so on ... .Our liners can meet the API manufacture standards,combining the strength ... to a hardness of HRC≥61-64. bi-metal mud pump liner