Ningbo Zhonghuan Steel Ball Factory was established in 1988 and is located in the eastern port city of Ningbo, covering an area of nearly 15000 square meters. We are a precision steel ball manufacturer and a member unit of the China Rolling Element (Steel Ball) Association. The company mainly produces precision steel balls such as bearing steel balls, stainless steel balls, ceramic balls, and hard alloy balls. The products of Zhonghuan Steel Ball Factory provide supporting services for domestic manufacturers of automotive bearings, low-noise bearings for motors, petroleum machinery, automotive parts, etc., and are also exported to Europe, North America, South America, and various countries in Asia.

In recent years, various steel balls have been directly sold to countries such as France, Italy, Germany, the United States, Russia, and South Korea. Among similar products in China, they have high quality and reasonable prices, and have received positive feedback from customers.

We continuously and effectively improve our production processes, always adhering to the principle of 'quality is the most basic goal, pursuing innovative technology for further development'. National and international product standards are based on Chinese standard GB/T308.1-2013, American standard ANSI/AFBMA Std.10-1989, and international standard ISO3290-1:2014.

If you are interested in establishing a business relationship with our factory, we welcome all inquiries regarding classified steel balls. So, we are willing to provide high-quality and stable products, as well as excellent services and competitive prices.

Enterprise development course:

In 1988, Ningbo Yinxian Special Steel Ball Factory was established.

In 1994, it was renamed as "Ningbo Zhonghuan Steel Ball Factory."

In 1997, successful technical transformation, stable production of G10Z4 high-precision silent steel ball;

In 1999, the new workshops of lapping workshop and fine grinding workshop were completed and put into use.

2001 acquisition of Shanghai Steel Ball Factory Meilong Branch equipment;

2002 successfully opened G5 high-precision bearing steel ball;

In 2003 the successful development of 304, 316, and other stainless steel precision steel ball series;

In 2004, 440C stainless steel ball and military ball were successfully developed. Realize the full control of spheroidizing annealing process of raw materials;

In 2005, we successfully developed the special steel ball for abrasion resistant and impact resistant drill roller, replacing the imported S2 steel ball;

In 2006 successfully developed a high-precision carbide ball;

In 2007 the development of new Finch stepless speed changing special steel ball;

Successfully developed G5 precision silicon nitride ball in 2008;

In 2010, the cold pier workshop, heat treatment workshop and rough grinding workshop were renovated;

In 2018, G5 silicon nitride balls were successfully produced with large circulation equipment.

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