There are essential differences between Wear-resistant elbow and traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe, steel plastic pipe and steel rubber pipe. The outer layer of wear-resistant ceramic elbow is seamless steel pipe, and the inner layer is corundum. The hardness of corundum layer is as high as hv1100-1400, which is equivalent to tungsten cobalt cemented carbide. The wear resistance of corundum layer is 20 times higher than that of carbon steel pipe. The wear resistance of the wear-resistant ceramic elbow mainly depends on the corundum layer with a thickness of several millimeters in the inner layer, which is a qualitative leap compared with the wear-resistant alloy cast steel pipe and cast stone pipe, which rely on both the composition and the structure as well as the thickness.
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