br (,, / (,, r br (,, / (,, r br (,, / (,, Large-diameter elbow materials are also constantly innovating, and materials such as cast stone, cast steel, alloy centrifugal casting composite ceramics have appeared one after another. Among them, the pipes are lined with alumina ceramics due to their high wear resistance, high hardness, oxidation resistance and corrosion resistance. Good and extremely high resistance to high and low temperature strength, it has become one of the most widely used wear-resistant materials, occupying about % of the world's special ceramic market share (wear-resistant materials).
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