Metal Surface Modification Treatment
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Tel: + 86 519 8321 1025
Email: export@wjhydro.com
Address: No.2689, Longcheng Avenue, Xinbei District, Changzhou, Jiangsu Province, P.R.China

We integrate advanced coating preparation processes, leverage a professional R&D team, and focus on delivering high-performance surface engineering solutions for extreme working conditions, helping customers improve equipment reliability and service life. We provide end-to-end surface engineering solutions from process matching, coating design to performance verification.


As the first company in China’s water conservancy sector to achieve mass production of ceramic-coated piston rods, Wujin Hydraulic built the country’s first long-stroke ceramic piston rod production line in 2007. In 2013, the company took the lead in drafting the energy industry standard NB/T 35017-2013 Technical Specification for Ceramic Coated Piston Rods, which was promulgated by the National Energy Administration of China. Today, this standard remains a benchmark for the industry, reflecting Wujin Hydraulic’s leading expertise and technological innovation in ceramic-coated piston rod technology.


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