?? Zhongcheng Machinery Manufacturing Co., Ltd. Of Bohai Petrolem Equipment (hereinafter abbreviated as Zhongcheng Machinery) was founded in 1958. Zhongcheng Machinery is located in Bohai New Zone, 50 kilometers southeast of Tianjin. The company is very close to the Tianjin Tanggu Xingang port and the famous seaside recreation center in Tianjin.It has advantegous location and convenient transportation.
?? Zhongcheng Machinery is a subsidiary of Bohai Petrolem Equipment of CNPC with legal personality.It's a comprehensive machinery manufacturer whose products cover petroleum machinery & equipment, drilling & production tools and accessories. Zhongcheng Machinery is one of the leading enterprises in China manufacturing petroleum machinery & equipment with sound manufacturing facilities, advanced technology, perfect measuring and testing devices.
?? After several decades' development, Zhongcheng Machinery has made notable achievement. In 1989, it became the national second -class enterprise; at the same year, it was awarded "Quality Management honor" both by CNPC and Tianjin Authority. Since 1994, it has been awarded the "Model Enterprise in Meeting to Custom's Order" in succession. Zhongcheng Machinery passed the certification of ISO9001 Quality System and ISO10012 Measuring and Inspection System respectively in 1995 and 1996, thus becoming the first manufacturer to get these two certificates in petroleum and equipment manufacturing field of China. Zhongcheng Machinery was awarded the honor of "high-tech enterprise" by CNPC in 1998. And also in that year, the "ZHONG-CHENG" brand was awarded as famous commercial brand in Tianjin.
In 2000, the diamond drilling bit and pumping unit obtained the certificates of authority to use official monogram of API. In 2003, the down hole motor also got the API certificate. Moreover Zhongcheng Machinery has the certificate of approval from Customers Beaura to apply to Customers House with foreign trade rights and registered certificate for the right of self-made clearance of goods awarded by national customs.
?? The quality target of Zhongcheng Machinery is " 100% qualified product, 100% contract performing and over 92% customer satisfaction, steadily improvement of product." With the quality guideline of " the need of costumer is company's pursuit", Zhongcheng Machinery constantly make progress and development and try its best to serve customer.

?? Along with the rapid development of Petroleum Industry in the past forty years, products of Zhongcheng Machinery that can be classified into two groups have got swift growth and. Drilling machinery products include: Positive Displacement Down-hole Motor, PDC Bit, Roller Chains etc. Oil production products include: High pressure reciprocating Pump, Electrical Submersible Pump, Pumping Units, Multi-phase Pump, Progressing Cavity Pump and etc. These products are being widely used in Oilfields both in China and abroad, such as USA, India, Iran, Canada, Indonesia, Qatar, Philippines, Malaysia, Kazakhstan, Venezuela and so on.
Zhongcheng Machinery has new sights in self-promotion in the new era. As a qualified manufacturer in China with a ?? long history, we would like to cooperate with friends of the world for the continuing developing and growing of Zhongcheng and world oil industry.