API Coupling
As we know steel pipe coupling is a short pipe or tube that with threads on both ends, used to connect pipelines. So It is a kind of pipe fittings that with threaded connection, the advantage is easy for pipeline maintenance or to replace the broken pipe.
API Coupling refers to the steel couplings that used in connecting casing pipe and tubing. Also known by OCTG coupling, it is usually manufactured in seamless type, material grade same with the pipe body (API 5CT K55/J55, N80, L80, P110 etc), same PSL or providing higher grades than requested. Same heat treatment also applicable, except there is an special requirements.
Api 5Ct Casing Coupling,Well Casing Coupling,Steel Tube Casing,Coupling Seamless Steel Henan Dongfanglong Machine Manufacture Co., Ltd , https://www.eastlongmachine.com
Yuchai began research and development of the micro-car diesel engine in 2005. It is one of the earliest units in China to develop and design a micro-car diesel engine. Its design capability and design level are the highest in China. The project was highly regarded by the Ministry of Science and Technology at the beginning of research and development. The National 863 Research Project allocated 800,000 yuan, and Yuchai Machinery Co., Ltd. raised 35.7 million yuan for project research and development.
At present, the project has completed the matching of the engine with the FAW-Ville, Changan SC6350B, SAIC-GM-Wuling and Shanghai Maple. It has applied for 8 patents and has authorized 4 projects; established a relatively complete research and development test platform for passenger car diesel engines; and built a pilot test base for rapid prototype production and process feasibility study of new prototypes for passenger car diesel engines. Formed the system design and development capability of the product, which has demonstrated and promoted the independent research and development of diesel cars in China; trained 4 doctors for the country; the vehicle dynamics and economy of all models matched with the automobile factory are better than the original The gasoline engine configuration of the car, in which the acceleration time and fuel consumption per 100 kilometers are compared, the fuel consumption of the third gear is reduced by 27.73%, while the NEDC cycle is reduced by 42%. It is compatible with the domestic mainstream minicars and economy cars. Matching, and economic.
A few days ago, Yuchai's project "Development and Key Technologies for Low-emission Electronically Controlled Diesel Cars" successfully passed the acceptance of the expert group organized by the Ministry of Science and Technology, marking that the project has entered the stage of mass production.