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Silicon nitride is one of important structural ceramics materials. It has high hardness, good lubricity, stand wear and tear. It’s a kind of atomic crystal. Under high temperature, it is not oxidation, and also resistance to cold and hot shock. Silicon nitride usually used into manufacture bearings, steam turbine blades, mechanical seal, mechanical components.
Application：molten aluminum，zinc，copper and other nonferrous metal.
We can produce all sizes and shapes silicon nitride tubes depend on your drawing.