Technical breakthrough in hydraulic cylinders for Wantong hydraulic shield machines helps domestic equipment break through in underground engineering

Wantong Hydraulic shield machine cylinders serve as the "muscle system" of tunnel excavation equipment, featuring three core advantages: high load capacity, precise speed regulation, and reliable sealing technology. This product can withstand alternating loads under complex working conditions and uses built-in high-precision displacement sensors to transmit digital analog signals, ensuring that the synchronization error of multiple cylinders is controlled at an industry-leading level. In terms of material technology, the piston rod adopts a forged base material with a multi-layer chrome plating composite process, combined with special heat treatment technology, improving wear resistance and lateral load capacity by more than 30% compared to traditional products, perfectly adapting to shield construction needs in various geological conditions such as soft soil and rock.

In recent years, the company has continuously increased R&D investment, with R&D expenses in the first half of 2025 rising by 15.93% year-on-year and 17 new patents added. Among them, the "multi-stage buffer hydraulic cylinder" technology effectively solves the oil leakage problem under extreme conditions. This technological breakthrough has brought significant market returns — the engineering machinery cylinder business achieved 142 million yuan in orders on hand in the first quarter of 2025, a year-on-year increase of 54.98%, with cylinders for tunnel engineering equipment such as shield machines becoming the main growth drivers. Huayuan Securities research report points out that Wantong Hydraulic's mechanical equipment cylinder gross margin has risen to 26.34%, with the technology premium effect gradually emerging.

Against the backdrop of continuous increases in domestic infrastructure investment, Wantong Hydraulic's shield machine cylinders are experiencing explosive growth opportunities. With the intensive commencement of major projects such as tunnel engineering and urban utility tunnels under the "14th Five-Year Plan," the demand for domestically produced shield machines is strong, directly driving the growth of core component procurement. Leveraging its customized service capabilities, the company can provide a full range of shield machine cylinder products according to customer working condition requirements and has successfully supplied many mainstream domestic shield machine manufacturers.

The global shield machine cylinder market landscape is undergoing profound changes. According to a QYResearch report, Wantong Hydraulic has entered the ranks of major global shield machine cylinder manufacturers, breaking the long-standing market dominance by European and American companies. Amid the wave of domestic substitution, the company's products have not only achieved core performance indicators on par with international standards but also formed unique advantages in service response speed, cost control, and customization capabilities.

Industry analysis believes that Wantong Hydraulic's breakthrough path provides important reference for the upgrading of traditional manufacturing industries. While consolidating traditional advantageous products such as shield machine cylinders, the company actively lays out new fields including intelligent hydraulic suspension systems and industrial robot joint components, forming a three-dimensional development pattern of "underground engineering equipment + above-ground new energy applications + future robotics track." With the National Energy Administration launching pilot projects for intelligent coal mine technology upgrades and the rapid growth of the new energy heavy truck market, the core technologies accumulated by Wantong Hydraulic's shield machine cylinders, such as high-pressure sealing and precise control, are expected to release value in broader application scenarios.

From urban subway tunnels to cross-border water diversion projects, Wantong Hydraulic's shield machine cylinders are driving a major leap in China's underground engineering construction with "millimeter-level precision." This Beijing Stock Exchange-listed company proves through continuous technological innovation that small hydraulic cylinders can not only support the thrust of shield machines weighing tens of tons but also become a powerful fulcrum for China's manufacturing to break through technological barriers and achieve high-end transformation.