The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.Jan 222019 The standard cone crusher mantle and concave ring material is manganesebut depending on the feed characteristics a variety of other alloys can be chosen to achieve the best cost per produced ton. The upper concave tiers must withstand high impact forces. The lower tiers require maximum abrasion resistance. There are some kinds of material selection:.
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