The critical working condition of piston ring has put forward very high requirements to piston ring material. On the one hand, piston ring has to resist high temperature and high pressure; on the other hand, it has to endure acute abrasion and striking load. To meet the needs of engines, Zhengsheng has been investing heavily on the production and development of material and has made some achievements in return. Currently, Zhengsheng has developed its own material series, ranging from low and medium grade to high grade with full specifications to meet different engine needs both at home and abroad. Listed below are some of today's common material used in the latest generation of diesel engines, also we can supply:

      Cast (gray cast) iron
      Alloy cast iron
      Ductile cast iron
      Vermicular graphite cast iron
      Malleable iron, semi-malleable iron
      steel ring
      Metal ceramic