Aiming at the problem of the low discharge pressure and unsatisfying air displacement of compressors,the material property and structure of piston ring is remoulded.

• 针对压缩机排气压力偏低,排气量达不到额定要求等问题,对活塞环的材质和结构进行改造,采用聚酰亚胺活塞环,保证了设备正常运转