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Ceramic elbow pipes for ash transportation in power plants are widely used. Coal used in power plants, both domestically and internationally, contains a high amount of impurities including stones, and its quality is very poor. When such coal is used in wear-resistant elbows for ash transportation in power plants, severe wear and a short service life occur. The use of ceramic wear-resistant pipes yields significant results. 1. The ceramic composite pipe used for ash transport features a male-female interlocking ceramic patch structure to prevent detachment; it is employed in ash transport systems, with the steel pipe thickness being no less than 5 mm and the ceramic layer thickness being less than 8 mm. 2. To reduce the resistance to fluid flow within the pipe, the ceramic outer tube of each elbow should adopt an integral or heat-bent elbow design; shrimp-shaped elbows or assembled elbows cannot be used for individual elbows. 3. To reduce the incidence of leaks, the length of each fitting in a straight pipe should be no less than 6 meters. The ceramic outer tube must be manufactured from a single seamless steel pipe; straight pipes cannot be made by joining multiple sections together. 4. The inner diameter of all pipes must be consistent; the ceramic lining pieces must fit together tightly without any gaps, and the surface should be smooth. Adhesives or other substances shall not be used for filling purposes. After the ceramic pipes are formed, any debris inside them must be removed, and the lining should appear in a ceramic white color.