| History: | 64 years | |||||||
| 1943 | Internal combustion engine experts set up factory named Perfect Circle Piston Ring | |||||||
| 1948 | Technology changed from single casting craft to barrel-type casting craft | |||||||
| 1956 | Establishment Perfect Cricle Engine Fittings Plant(jount state-private) | |||||||
| 1960 | Perfect Cricle Engine Fittings Plant affiliated to state own factory | |||||||
| 1969 | Establishment of chromed piston ring production line | |||||||
| 1971 | Establishment of steel piston ring production line | |||||||
| 1979 | Imported key equipment and instrument from Japan, Britain and Germany | |||||||
| 1986-1990 | More than 50 engineers and technicians were sent to GOETZ company to trading and learing | |||||||
| 1988 | Establishment of special piston ring production line | |||||||
| 1987 | Establishment of the first piston ring institute | |||||||
| 2002 | Develop penetrating ceramic surface treatment of piston ring | |||||||
| Use Nano-technology to CVD ceramic piston ring | ||||||||
| 2009 | Technology improvment | |||||||
| Annual prodction capacity | Dia ¢140-¢800 2.5 million pieces Dia ≤¢140 3 million pieces |
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| Application | Diesel generators | |||||||
| Railway locomotive | ||||||||
| Oil drilling machine | ||||||||
| Air compressor | ||||||||
| Hammers and other construction machinery | ||||||||
| Hydraulic seal ring | ||||||||
| Honor | Won the state highest reward the state Silver medal | |||||||
| Got the award of China internal Combustion Engine Industry Centry Achievement | ||||||||
| Got the award of Hunan famous Brands | ||||||||
| The No.1 big piston ring manufactuer in China | ||||||||
| China market share | ¢140-¢800 80% | |||||||
| OURS | OTHERS | |||||||
| Production equipment |
Germany material technology | Not available | ||||||
| American CKS plating production line | Not available | |||||||
| Automatic phosphating line | ||||||||
| Instrument | Germany imported direct reading spectrometer | |||||||
| Germany imported piston ring profile measuring instrument | Not available | |||||||
| Germany imports piston ring high measuring instrument | ||||||||
| German imports of ion chromatography | Not available | |||||||
| Germany imported piston ring pressure distribution measuring instrument | Not available | |||||||
| Germany imported piston ring tangential elastic instrument | ||||||||
| US imports of carbon and sulfur analyzer | ||||||||
