Cement ball mill liners, usually use High Cr, Medium Cr, Cr-Mo alloy as materials, which has advantages of high hardness: 40-55HRC, so means better wear resistance performance. Normally can last 3-5 years long lifetime. As for the specific materials to be choose, depends on the specifica mills situation, like mills size, how many chambers, if have pre-grinding(roller press), balls size. Huihe's engineer will assist with site, to recommend most suitable lining materials&shape, maximize grinding efficiency as well as cost effectivity.