Wear-Resistant Inlay Rings, is a particular parts of internal combustion engines researching and developing in China in recent ten years.Its materials are Hi-Ni Austenite Irons Casting.These rings are manufactured in accordance with ZBJ 92 003-87 professional standard of the Peoples Republic of China, also in accordance with ISO 2892-1973 Internation standard 《Austenite Irons》Li-Ni Cu Cr 15 6 2.