High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.

High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.High hardness, excellent wear resistance, not easy to cause seizure, good casting performance and cutting performance of composite bushing, good corrosion resistance in atmospheric and fresh water.