Jiangsu Yonghang Rail Transit Technology Co., Ltd. is a specialized industrial manufacturer based in Yangzhong City, Jiangsu Province, dedicated to the production of core dynamic components for heavy-duty internal combustion engines. Although its corporate title suggests a primary focus on the railway infrastructure sector, the company has established a substantial footprint in the maritime and offshore industries as a producer of high-performance diesel engine pistons. Established in 2018, the enterprise was formed through the strategic integration of technical assets and capabilities from antecedent manufacturers, including Wuxi Comal Piston Co., Ltd. and Wuxi Joel Rail Transit Technology Co., Ltd. This consolidation brought together decades of expertise in metallurgy, casting, and precision machining under one operational umbrella.
The company’s manufacturing operations are centrally located in a high-tech industrial park, where it maintains a large-scale facility equipped with specialized production lines for casting, forging, heat treatment, and CNC machining. A significant portion of its engineering output is dedicated to the marine sector, specifically the manufacturing of medium and high-speed diesel engine pistons with diameters ranging from 160mm to 400mm. Recognizing the rigorous demands of commercial shipping, the company engineers its products to withstand the corrosive effects and extreme combustion pressures associated with engines running on heavy fuel oil (HFO).
Their maritime product portfolio encompasses a variety of complex technical configurations, including steel-top/iron-skirt combinations, steel-top/aluminum-skirt assemblies, and integral cast iron or aluminum pistons. These components feature critical design elements such as internal cooling oil galleries and high-nickel-iron ring grooves, which are essential for maintaining thermal stability and extending the service life of vessel propulsion systems. The company controls the full manufacturing lifecycle, employing rigorous fatigue strength improvements and standardized quality control measures to ensure that every component meets the safety and reliability standards required for ocean-going vessels and offshore power generation units. With an annual production capacity capable of delivering tens of thousands of units, Jiangsu Yonghang Rail Transit Technology Co., Ltd. serves as a key component supplier for the maintenance and construction of large-bore engines used in both locomotive transportation and the global shipping industry.