For seal rings of mechanical seal and sleeves and bearings, wear resistance and good sliding characteristic as well as corrosion resistance are required. That is because the seal ring of mechanical seal is used under severer corrosive conditions such as strong acid and strong alkali solution in chemical plants, and the sleeve and bearing supports a shaft of vertical shaft mixed flow pumps which are an example of large flow pumps. Based on the powder metallurgical technology compiled through long experiences, our corrosion-resistant sliding material clears those severe requirements in balance and occupies the top share in this product field.
