The G-TN-9D Project is a critical water tunnel construction project initiated by the Metropolitan Waterworks Authority (MWA) in Thailand. This project, built in 2023 and opened in 2024, focuses on installing a large water tunnel and the world's largest 3,000mm gate valve at the time of installation. The project utilized advanced underground construction methods to ensure the efficient and safe operation of the water supply system, crucial for enhancing water distribution in the region.

For this project, Unicrane has supplied 17 sets of universal ring molds (OD 3.756m x 1.2m x 0.18m, 5p/r) and 1 set of smaller universal ring mold (OD 3.756m x 0.8m x 0.18m, 5p/r) for this project. These molds are pivotal in the production of high-quality, durable tunnel segments, ensuring that the tunnel can withstand the operational pressures of the water system.